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      "body": "Congratulations @peeterjoot! You received a personal award!\n\n<table><tr><td>https://steemitimages.com/70x70/http://steemitboard.com/@peeterjoot/birthday3.png</td><td>Happy Birthday! - You are on the Steem blockchain for 3 years!</td></tr></table>\n\n<sub>_You can view [your badges on your Steem Board](https://steemitboard.com/@peeterjoot) and compare to others on the [Steem Ranking](https://steemitboard.com/ranking/index.php?name=peeterjoot)_</sub>\n\n\n###### [Vote for @Steemitboard as a witness](https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1) to get one more award and increased upvotes!",
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      "body": "You say \"This is associated with a divergence of the magnetic field\".  You measure \\grad \\cdot B \\ne 0, when a spin flip occurs?",
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      "body": "Conceptually, the platform is good for this, but without some latex support in the markdown, I'm not going to try using it.  I feel forced to stick to existing non-steemit platforms for anything mathematical.",
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      "body": "I had the same problem. I searched for the solution and I stumble upon your post. I was planning to post introductory course on general relativity and quantum field theory, sadly equations dont exist here. One has to resort to images. \n\nBy the way, I love physics too.",
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      "body": "Okay. Fixed. Thank you for the tip.",
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      "body": "fyi.  Your brackets would look better if you put left/right markers on them in the latex: {\\left( \\frac{x}{y} \\right)}^2",
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      "body": "In the youtube description associated with this video, one of your wallet recommendations is the ledger nano S.  I just got a nano S, and the setup of the bitcoin wallet app asks to select between the segwit and legacy blockchains.  Do you happen to know if a wallet configured in either mode supports standard bitcoin and what the differences are?",
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      "permlink": "re-peeterjoot-re-dkmathstats-at-higher-levels-it-s-hard-to-make-math-fun-20180117t021035498z",
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      "body": "Thank you for your comment.\n\nMost math teachers in my opinion don't try to make things \"fun\" nor interesting. A large handful of them make math more scary than it should be. \n\nI do agree that it it still up to the student whether or not they want to continue math. Math teachers who provide motivating examples with realistic (enough) math applications can influence the student's decision with sticking with math. \n\nI do agree with you about grade school teachers. Here in the province of Ontario (Toronto area), the grade school teachers were somewhat average with teaching math. My high school math teachers for the most part were pretty good (lucky sample size I guess). They were competent, knowledgeable  but I wish they talked more about math careers and such.\n\nOne good application of math for high school students is understanding the basics of finance, interest rates, how compound interest works with exponential functions. Personal finance is one of those undertaught subjects in a lot of places.",
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      "permlink": "re-dkmathstats-at-higher-levels-it-s-hard-to-make-math-fun-20180116t214542949z",
      "title": "",
      "body": "Math can definitely be taught in ways that take the fun out of it.  However, I would guess that being coerced into studying something that you have no intrinsic interest in is the most common way to kill the fun in the subject, and that applies to mathematics or any other subject.\n\nIf you don't find math fun, then (assuming that fun wasn't destroyed by poor teaching or study) that's a probably a strong sign that you should be studying something else that you do find fun.  I personally would have absolutely no interest in studying how to do general math proofs, despite loving reading and writing clever math proofs related to mathematics and physics genres that I enjoy.\n\nI don't think that you should have to \"make\" math fun.  At higher levels, people should study mathematics iff they find it fun or they want to apply it to something that they are interested in.  That can easily lead back to study of mathematics if appropriate, in which case it will probably be fun, because the rationale for the study is understood and the student has a goal.\n\nI'd personally like to see applications driven reasons for studying math presented in school.  That doesn't fit well with the one size fits all model of public school where conformity and uniformity appears to be one of the primary goals.\n\nGrade school teachers have no clue about the applications of even simple higher level mathematics like trigonometry.  When I took trig way back in grade 12, I wanted to know how it was used in real life, and the only answer that I got in the classroom was along the lines of \"It can be used in surveying ; you can measure the height of a building by measuring the angle\".  Those were dumb examples.  \n\nOn the other hand, I had a strong interest in electronics and circuitry.  Had somebody said that trigonometry was the workhorse of circuit analysis, of radio signal encoding, and information theory used in coding, I would have had a much stronger reason to study that trig.  Eventually, I learned that trig was one of the keys to understanding the roles of the capacitors and inductors that I had in the little AM \"crystal\" set that I built at the time.\n\nImagine a world where the subject of interest drives what you should study, where you could get some coaching to help guide you towards the study required to achieve a desired applied or theoretical goal.  If appropriate, a lot of fun math could be learned along the way.",
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      "parent_permlink": "professor-claims-math-algebra-and-geometry-promote-white-privilege-the-dnc-dolts-are-truly-lost",
      "author": "peeterjoot",
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      "title": "",
      "body": "@@ -419,17 +419,17 @@\n es tosse\n-s\n+d\n  in.  I \n",
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      "body": "@@ -37,18 +37,16 @@\n ty in so\n-me\n  many wa\n",
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      "title": "",
      "body": "This prof is out of touch with reality in some many ways.  As well as showing no evidence of familiarity with any mathematics, also clearly doesn't attend university math classes.  Twenty+ years ago when I took my engineering \"Calculus 1\" (UofT: Toronto, Canada), you could look out over the heads in the class, and white people were rare.  The bulk of the class was Asian, then middle eastern, with a sprinkling of whites tosses in.  I doubt the demographic mix has gotten any whiter since 1992.  \n\nShe might say that I have no right to comment since I am one of those \"privileged white males\".  I demonstrated my white privilege by living in my mom's basement in university, and paying my way by doing hard labour in the summers.",
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      "parent_author": "crakroc-records",
      "parent_permlink": "re-peeterjoot-re-crakroc-records-re-peeterjoot-re-crakroc-records-lunatic-professor-claims-teaching-algebra-and-geometry-bolsters-white-privilege-20180108t162133876z",
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      "title": "",
      "body": "Scarier is that these are the people that are guiding the creation and revision of public school curricula (leading to idiocy like trying to teach the commutative properly of multiplication in grade 6, but screwing up the actually teaching of multiplication).",
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  "timestamp": "2018-01-08T16:21:36",
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      "parent_permlink": "re-crakroc-records-re-peeterjoot-re-crakroc-records-lunatic-professor-claims-teaching-algebra-and-geometry-bolsters-white-privilege-20180108t140420774z",
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      "body": "Seems like they'll let anyone be a professor these days.",
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      "parent_author": "crakroc-records",
      "parent_permlink": "re-peeterjoot-re-crakroc-records-lunatic-professor-claims-teaching-algebra-and-geometry-bolsters-white-privilege-20180108t042755842z",
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      "title": "",
      "body": "I found one of her scholarly journal articles: \"The Sociopolitical Turn in Mathematics Education\", Journal for Research in Mathematics Education,\n Vol. 44, No. 1, Equity Special Issue\n(January 2013), pp. 37-68.\n\nIt's 33 pages of dense text with no sign of any knowledge of mathematics.",
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      "title": "",
      "body": "You can google and find plenty of sources on it.\n\nhttps://www.campusreform.org/?ID=10005",
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      "title": "",
      "body": "Do you have a reference for her statements?",
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      "title": "",
      "body": "Thanks for your comment @peeterjoot. I will discuss the sin(x) vs. the chord problem in a future post. Thanks again for reminding me.",
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      "author": "peeterjoot",
      "permlink": "re-ertwro-clifford-algebras-20180107t060550488z",
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      "body": "A great introductory book is Geometric Algebra for Computer Science:\n\nhttp://www.geometricalgebra.net/index.html\n\nThis book includes a lot of the geometry side of Geometric Algebra.\n\nFor a more axiomatic treatment, see Doran & Lasenby's \"Geometric Algebra for Physicists\":\n\nhttp://www.mrao.cam.ac.uk/~cjld1/pages/book.htm\n\nNote that the applications in this book require a great deal of physics background, and aren't for the faint of heart.\n\nI'm continually impressed how many different aspects of mathematics can be brought under the umbrella of GA.  For example, all of Stokes theorem, Green's theorem, Cauchy integral equations, and Divergence theorems are all specific cases/applications of the Fundamental theorem of geometric calculus.  There are a number of other algebraic structures that have GA representations.  Examples include: Cramer's rule, differential forms, complex numbers, quaternions, and Pauli and Dirac algebras.",
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      "permlink": "re-masterwu-linear-approximations-part-3-why-sin-x-x-near-0-20180107t053436873z",
      "title": "",
      "body": "A nice treatment of limits like sin(x), x-> 0 can be found here:\n\nhttps://ocw.mit.edu/courses/mathematics/18-01-single-variable-calculus-fall-2006/video-lectures/lecture-3-derivatives/\n\nIn particular, he illustrates sin(x) vs. the chord for small angles, which makes it obvious geometrically that the limit is the angle for small angles (since the circular arc and chord end up approaching each other).",
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      "title": "",
      "body": "Some of the most optimistic news on Litecoin I've heard in a while.  LTC really could use a bit of good news and some upward momentum.",
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      "parent_permlink": "synctex",
      "author": "peeterjoot",
      "permlink": "synctex-on-mac",
      "title": "synctex on mac",
      "body": "Switching to a Mac from Windows was initially was a big hit on my productivity, as I had to figure out how to do the simplest things (like cut and paste), but after two years I have most things figured out.  One kind of specialized task, exploiting reverse synctex support when writing latex documents, is something that I hadn't taken the time to figure out how to do on the mac.   \n\nOn Windows I used to use the Sumatra pdf viewer.  That viewer had synctex support, in particular reverse lookup support, so if I was compiling my latex -> pdf appropriately, then I could click on whatever was of interest in the pdf viewer and it would start a editor (vim in my case) session of the file in question, pointing me right at the line of the latex of interest.  \n\nCompiling appropriately means including a -synctex=1 option in the pdflatex command that builds the pdf.  As I now use latexmk (which does dependency checking, auto-bib processing, ...), that indirect pdflatex command looks like the following for me:\n\n```\nmax_print_line=1000 \\\nlatexmk -pdf \\\n-latexoption='-file-line-error' \\\n-latexoption='-synctex=1' \\\n-latexoption='-shell-escape' \\\n-latexoption='--halt-on-error' \\\nGAelectrodynamics.tex\n```\n\n\n\nI really missed that feature, and have been making do with a poor-man's synctex:\n\n```\ngrep -n pattern *.tex > o\nvim -q o\n```\n\nHowever, I have finally taken the time to figure out how to do the same on the mac that I'm now using.  Here's an example of what happens with shift-command-click using the Skim pdf viewer:\n\n![Screen Shot 2018-01-03 at 2.53.57 PM.png](https://steemitimages.com/DQmYLSmRnSoYzs8t2qqWsdBF1Eb4LZyNo4q2WiWHXhaEWaY/Screen%20Shot%202018-01-03%20at%202.53.57%20PM.png)\n\nThe cursor is positioned on the line in the latex source associated with the click point, so that a correction can easily be made.\n\nA couple steps are required to get this to work:\n* Install a synctex capable pdf viewer.\n* Skim->preferences: \n![Screen Shot 2018-01-03 at 2.59.28 PM.png](https://steemitimages.com/DQmZzUvLktC3yH8JYJmX3Drj5zdp394o2oFG4ak5G9Uueng/Screen%20Shot%202018-01-03%20at%202.59.28%20PM.png)\n* And download the mvim script to my machine from:\nhttps://raw.githubusercontent.com/b4winckler/macvim/master/src/MacVim/mvim\n\nThis script is apparently in the dmg image that comes with MacVim, but that's been long since deleted on my machine.\n\nReferences:\n* http://mactex-wiki.tug.org/wiki/index.php/SyncTeX\n* https://www.sumatrapdfreader.org/free-pdf-reader.html\n* https://en.wikipedia.org/wiki/Inverse_search",
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      "author": "peeterjoot",
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      "title": "synctex on mac",
      "body": "When using latex on Windows I used to use sumatra pdf\n\nhttps://www.sumatrapdfreader.org/free-pdf-reader.html\n\nThis had synctex support, so if I was compiling my latex -> pdf appropriately.  Example:\n\nmax_print_line=1000 latexmk -pdf  -latexoption='-file-line-error' -latexoption='-synctex=1' -latexoption='-shell-escape' -latexoption='--halt-on-error' GAelectrodynamics.tex\n\n(i.e. including -synctex=1 in the pdflatex command that latexmk runs), then I could click on whatever was of interest in the pdf viewer and it would start a vim session of the file in question, pointing me right at the line of the latex of interest.\n\nI've finally taken the time to figure out how to do the same on the mac that I'm now using.  Here's an example of what happens with shift-command-click using the Skim pdf viewer:\n\n![Screen Shot 2018-01-03 at 2.53.57 PM.png](https://steemitimages.com/DQmYLSmRnSoYzs8t2qqWsdBF1Eb4LZyNo4q2WiWHXhaEWaY/Screen%20Shot%202018-01-03%20at%202.53.57%20PM.png)\n\nTwo steps are required to get this to work:\n* Skim->preferences: \n![Screen Shot 2018-01-03 at 2.59.28 PM.png](https://steemitimages.com/DQmZzUvLktC3yH8JYJmX3Drj5zdp394o2oFG4ak5G9Uueng/Screen%20Shot%202018-01-03%20at%202.59.28%20PM.png)\n* And download the mvim script to my machine from:\nhttps://raw.githubusercontent.com/b4winckler/macvim/master/src/MacVim/mvim\n\nThis script is apparently in the dmg image that comes with MacVim, but that's been long since deleted on my machine.",
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      "author": "peeterjoot",
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      "author": "cryptovestor",
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      "title": "",
      "body": "Yes, but sheer size alone will encourage people to jump on board eventually for those that want to accept cryptocurrencies. I don't think it matters much anyway though - I don't think the currency use case is all that important.",
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      "parent_permlink": "ethereum-pumps-or-here-s-the-next-price-target",
      "author": "peeterjoot",
      "permlink": "re-cryptovestor-ethereum-pumps-or-here-s-the-next-price-target-20180102t135141635z",
      "title": "",
      "body": "One of the other reasons that I'd moved some bitcoin into altcoin was to attempt to spend or send it.  With the high fees and slow transactions that bitcoin offers, it has become useless for small value transactions.  \n\nETH works as a transfer mechanism, but as a currency replacement for online transactions it's adoption is likely to be slower.  I asked one retailer about their plans for alt-coin adoption (ETH, LTC, BCH, BTG) said they were planning Litecoin adoption in short order (~weeks), not planning to adopt BCH, and on ETH:\n\n\"Litecoin is basically bitcoin's code so this integration is very simple, however ETH would need a complete rewrite and not possible at this time.\"\n\nYou can probably argue that the use case for ETH is not a currency, but because it is different enough from a number of other alt-coins, more infrastructure will be required for retailers to adopt it, should they want to.",
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      "parent_permlink": "re-peeterjoot-re-dkmathstats-re-peeterjoot-mathematics-markup-in-steemit-20180101t165221607z",
      "author": "peeterjoot",
      "permlink": "re-dkmathstats-re-peeterjoot-re-dkmathstats-re-peeterjoot-mathematics-markup-in-steemit-20180101t180137785z",
      "title": "",
      "body": "The following steemit post: \n\nhttps://steemit.com/steemit/@cryptovest/missing-markdown-functionalities-on-steemit-footnotes-and-mathjax-latex\n\nalso discusses this issue.  Looks like there was a feature request for mathjax in steemit:\n\nhttps://github.com/steemit/condenser/issues/7\n\nI wonder how stackexchange dealt with the security issues that led this feature request to be closed?\n\nI wonder how hard it would be to fork the UI:\n\nhttps://github.com/steemit/condenser\n\nand try implementing this?",
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      "parent_permlink": "re-dkmathstats-re-peeterjoot-mathematics-markup-in-steemit-20180101t145221897z",
      "author": "dkmathstats",
      "permlink": "re-peeterjoot-re-dkmathstats-re-peeterjoot-mathematics-markup-in-steemit-20180101t165221607z",
      "title": "",
      "body": "Hm. I would have to look into MathJax in more detail. \n\nCurrently, I am using RMarkdown to write my posts and LaTeX offline. The text from R Markdown would be transferred into the Steemit text window before posting. Any math LaTeX would be done with QuickLaTeX.com.",
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  "op": [
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      "parent_permlink": "re-peeterjoot-mathematics-markup-in-steemit-20180101t055737201z",
      "author": "peeterjoot",
      "permlink": "re-dkmathstats-re-peeterjoot-mathematics-markup-in-steemit-20180101t145221897z",
      "title": "",
      "body": "Mathjax ( https://www.mathjax.org/ ) encodes the equations without images, so you can rescale your browser page and the equations will always be readable.  As a specific example, take a look at a page that uses mathjax, such as:\n\nhttp://peeterjoot.com/2016/01/05/energy-momentum-tensor-for-a-scalar-field/\n\nNo amount of control-plus-minus in your browser will make the equations fuzzy.  Compare that to a page that uses latex generated images, like:\n\nhttps://steemit.com/mathematics/@dkmathstats/right-angle-triangles-and-the-soh-cah-toa-acronym\n\nOn this page, control+ a few times makes the c^2 = a^2 + b^2 really fuzzy.  \n\nMany mathjax engines, such as the one that is used on stackexchange, physicsforums and the wordpress plugin mentioned) have latex equation parsers, so you can write your equations just as you would normally when doing latex -> pdf, but they can be rendered nicely in html.",
      "json_metadata": "{\"tags\":[\"math\"],\"links\":[\"https://www.mathjax.org/\",\"http://peeterjoot.com/2016/01/05/energy-momentum-tensor-for-a-scalar-field/\",\"https://steemit.com/mathematics/@dkmathstats/right-angle-triangles-and-the-soh-cah-toa-acronym\"],\"app\":\"steemit/0.1\"}"
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      "author": "timspeer",
      "permlink": "re-peeterjoot-re-timspeer-continuous-functions-20180101t060034842z",
      "title": "",
      "body": "Yes, it should have been e<sup>i2&pi;x</sup>. I don't have a link for math markup. I am just using the sup tag from html and unicode character for &pi;.",
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      "author": "dkmathstats",
      "permlink": "re-peeterjoot-mathematics-markup-in-steemit-20180101t055737201z",
      "title": "",
      "body": "@@ -110,16 +110,73 @@\n ts here.\n+ (I am not familiar with MathJaX but I have heard of it.)\n %0A%0AYou ca\n",
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      "author": "dkmathstats",
      "permlink": "re-peeterjoot-mathematics-markup-in-steemit-20180101t055737201z",
      "title": "",
      "body": "The solution I use is a workaround solution. I use QuickLaTeX.com to convert LaTeX into images in my math posts here.\n\nYou can't use LaTeX here but you can use images!",
      "json_metadata": "{\"tags\":[\"math\"],\"app\":\"steemit/0.1\"}"
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  "op": [
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    {
      "parent_author": "",
      "parent_permlink": "math",
      "author": "peeterjoot",
      "permlink": "mathematics-markup-in-steemit",
      "title": "mathematics markup in steemit?",
      "body": "Looking at the mathematic, physics, and math tags on steemit, it looks like anybody trying to write equations is embedding latex diagrams, which is pretty clumsy compared to a markup scheme like MathJax-Latex (a wordpress plugin ; examples here: http://peeterjoot.com/category/math-and-physics-play/ ) or the built-in markup for equations available on https://math.stackexchange.com/ or https://www.physicsforums.com/\n\nHas anybody tried implementing a latex based mathjax markup scheme for steemit?  How extensible is steemit markup?  Are there alternate UIs than steemit.com itself that would allow for more general markup?",
      "json_metadata": "{\"tags\":[\"math\",\"mathematics\",\"markup\",\"latex\",\"mathjax\"],\"links\":[\"http://peeterjoot.com/category/math-and-physics-play/\",\"https://math.stackexchange.com/\",\"https://www.physicsforums.com/\"],\"app\":\"steemit/0.1\",\"format\":\"markdown\"}"
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