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[Articles & News] What does math look like to mathematicians? Excerpt: Math with Bad Drawings.

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Post time: 19-9-2018 06:26:43 Posted From Mobile Phone
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What do you see?
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▼ What does math look like to mathematicians? It’s very simple. Math looks like language.
A funny language, I’ll admit. It’s dense, terse, and painstaking to read. While I zip through five chapters of a Twilight novel, you might not even turn the page in your math textbook. This language is well suited to telling certain stories (e.g., the relations between curves and equations), and ill-suited to others (e.g., the relations between girls and vampires). As such, it’s got a peculiar lexicon, full of words that no other tongue includes. For example, even if I could translate a0+ ∑∞n=1(ancos(nπx/L) + bnsin(nπx/L) into plain English, it wouldn’t make sense to someone unfamiliar with Fourier analysis, any more than Twilight would make sense to someone unfamiliar with teenage hormones.
But math is an ordinary language in at least one way. To achieve comprehension, mathematicians employ strategies familiar to most readers. They form mental images. They paraphrase in their heads. They skim past distracting technicalities. They draw connections between what they’re reading and what they already know. And—strange as it may seem—they engage their emotions, finding pleasure, humor, and squeamish discomfort in their reading material.
Now, this brief chapter can’t teach fluent math any more than it could teach fluent Russian. And just as literary scholars might debate a couplet by Gerard Manley Hopkins or the ambiguous phrasing of an email, so mathematicians will disagree on specifics. Each brings a unique perspective, shaped by a lifetime of experience and associations.
That said, I hope to offer a few nonliteral translations, a few glimpses into the strategies by which a mathematician might read some actual mathematics. Consider it Squiggle Theory 101.
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When mathematicians see 7 x 11 x 13
Math with Bad Drawings /Ben Orlin
A common question I get from students: “Does it matter whether I multiply by 11 or 13 first?” The answer (“no”) is less interesting than what the question reveals: that in my students’ eyes, multiplication is anaction, a thing youdo. So one of the hardest lessons I teach them is this: Sometimes,don’t.
You don’t have to read 7 × 11 × 13 as a command. You can just call it a number and leave it bee. (▪ ▪ ▪)

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Post time: 3-10-2018 19:22:32
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Thanks for sharing the source; Math is indeed the language of the cosmos.
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