cothrun + math   260

A Few of My Favorite Sigmoids | Raph Levien’s blog
Here I’ll be looking at the subject of sigmoid functions from a somewhat unusual perspective: their suitability as a component in a digital musical instrument. I’ll consider how they sound, as well as efficiency of computing them.
music  math  dsp 
6 weeks ago by cothrun
MiniZinc is a free and open-source constraint modeling language.

You can use MiniZinc to model constraint satisfaction and optimization problems in a high-level, solver-independent way, taking advantage of a large library of pre-defined constraints. Your model is then compiled into FlatZinc, a solver input language that is understood by a wide range of solvers.

MiniZinc is developed at Monash University in collaboration with Data61 Decision Sciences and the University of Melbourne.
optimization  logic  constraint  math 
may 2018 by cothrun
the secret life of NaN
The floating point standard defines a special value called Not-a-Number (NaN) which is used to represent, well, values that aren’t numbers. Double precision NaNs come with a payload of 51 bits which can be used for whatever you want– one especially fun hack is using the payload to represent all other non-floating point values and their types at runtime in dynamically typed languages.
programming  math  floatingpoint 
april 2018 by cothrun
Physical Modeling in MATLAB
model  math  matlab 
january 2018 by cothrun
Inigo Quilez :: fractals, computer graphics, mathematics, demoscene and more
These are written articles on the techniques I develop for my computer graphics experiments, demos, shadertoys and movies. For video tutorials, code and other useful resources visit the landing page. All content here is beginner and medium level, and mostly pragmatic rather than theoretical. I have a long long queue of pending articles, I write them whenever I have a little bit of free time (mostly late at night), so stay tuned!
graphics  3d  math  tutorial  programming 
september 2017 by cothrun
A Primer on Bézier Curves
So, what if you need to program them yourself? What are the pitfalls? How do you draw them? What are the bounding boxes, how do you determine intersections, how can you extrude a curve, in short: how do you do everything that you might want when you do with these curves? That's what this page is for. Prepare to be mathed!
math  algorithm  graphics 
april 2017 by cothrun
Million Dollar Curve
An elliptic curve everyone can trust.
cryptography  math 
february 2016 by cothrun
Unlimited Personalized Lessons from Knewton
Get the best personalized lessons to help with Math, English, Biology, History, and more, for free. It’s like studying with the world’s smartest tutor whenever and wherever you need.
education  math  learning 
february 2016 by cothrun
Intuition, Details and the Bow/Arrow Metaphor | BetterExplained
My favorite analogies explain a thought and help you explore deeper truths. Here's a metaphor that captures my stance on learning: * Rote details are arrows,
math  learning  thought 
february 2016 by cothrun
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