mathematical software


A term I’d always found intriguing, mostly because it’s such an unusual word. It’s a concept from mathematics and computer science but can be applied more generally—not that it often is. Basically, it’s an operation that, no matter how many times you do it, you’ll still get the same result, at least without doing other operations in between. A classic example would be view_your_bank_balance being idempotent, and withdraw_1000 not being idempotent.

HTs: @aidmcg and Ewan Silver who kept saying it


Functions that generate the first n terms of the ‘look and say’ sequence.

Further reading on the sequence itself:

Hope you enjoy! :) xx

(20.11.17) Day 15/100 of Productivity

(I’ll start trying to get better photos again I promise)

Spent today finishing up one last bit of validation for booking a customer and everything should work fine. The only issue I’m having is with cancelling appointments but I’ll be getting into that tomorrow. Started to make some C1 notes for my resit summarizing the simplest topic that I don’t need to resit but am anyway. It’s been a quiet but productive enough day.

I want to do so many things- I want to fly an airplane, control the fish of skies and hold responsibility for hundred lives; I want to diagnose disorders and diseases, write the cures on a piece of paper and tell them that there is no such thing as a retarded mind; I want to interpret computer generated codes, work on mathematical algorithms and program softwares religiously; I want to hold test tubes in white-gloved hands, make chemical observations and work long hours in my laboratory; I want to sit in the living room of a faculty apartments, publish research papers and walk on the grounds of a university campus eager to teach something new; I want to write, live in a country- cottage and look out of the window while typing lines of fiction and fantasy on an out-dated laptop while sipping a cup of coffee every now and then. I want to be so much. I want to live the lives of all the characters in my book collection.
—  Submitted by cherriesandacidsalts

Rafael Araujo’s illustrations are bafflingly complex—so complex that you might assume the artist uses a computer to render the exacting angles and three-dimensional illusions. And true, if you were to recreate his intricate mathematical illustrations using software, it probably wouldn’t take you long at all. But the craziest part of all is that Araujo doesn’t use modern technology to create his intricately drawn Calculations series—unless, of course, you count a ruler and protractor.

[MORE: Wildly Detailed Drawings That Combine Math and Butterflies]

Indiana University, IU Online

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