Paul Brodersen paulbrodersen

Mathematics: What do grad students in math do all day?

A lot of math grad school is reading books and papers and trying to understand what's going on. The difficulty is that reading math is not like reading a mystery thriller, and it's not even like reading a history book or a New York Times article.

The main issue is that, by the time you get to the frontiers of math, the words to describe the concepts don't really exist yet. Communicating these ideas is a bit like trying to explain a vacuum cleaner to someone who has never seen one, except you're only allowed to use words that are four letters long or shorter.

What can you say?

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	#!/usr/bin/env python

	"""
	nsb_entropy.py

	June, 2011 written by Sungho Hong, Computational Neuroscience Unit, Okinawa Institute of
	Science and Technology
	May, 2019 updated to Python 3 by Charlie Strauss, Los Alamos National Lab

	This script is a python version of Mathematica functions by Christian Mendl

	#!/bin/sh

	# Convert all arguments (assumed SVG) to a TIFF acceptable to PLOS
	# Requires Inkscape and ImageMagick 6.8 (doesn't work with 6.6.9)

	for i in $@; do
	BN=$(basename $i .svg)
	inkscape --without-gui --export-png="$BN.png" --export-dpi 300 $i
	convert -compress LZW -alpha remove $BN.png $BN.tiff
	mogrify -alpha off $BN.tiff

	#!/usr/bin/env python

	import networkx as nx
	import matplotlib.pyplot as plt
	import math
	from random import random
	from numpy import arange

	N = 1000
	K = 5

	'''
	Non-parametric computation of entropy and mutual-information

	Adapted by G Varoquaux for code created by R Brette, itself
	from several papers (see in the code).

	This code is maintained at https://github.com/mutualinfo/mutual_info
	Please download the latest code there, to have improvements and
	bug fixes.

	raise ValueError("DEPRECATED/FROZEN - see https://github.com/kastnerkyle/tools for the latest")

	# License: BSD 3-clause
	# Authors: Kyle Kastner
	# Harvest, Cheaptrick, D4C, WORLD routines based on MATLAB code from M. Morise
	# http://ml.cs.yamanashi.ac.jp/world/english/
	# MGC code based on r9y9 (Ryuichi Yamamoto) MelGeneralizedCepstrums.jl
	# Pieces also adapted from SPTK
	from __future__ import division
	import numpy as np


	def line_supercover(Py_ssize_t y0, Py_ssize_t x0, Py_ssize_t y1, Py_ssize_t x1):

	cdef int dx = abs(x1-x0)
	cdef int dy = abs(y1-y0)
	cdef int x = x0
	cdef int y = y0
	cdef int ii = 0
	cdef int n = dx + dy
	cdef int err = dx - dy

	# Instructions for 4.14 and cuda 9.1
	# If upgrading from 4.13 and cuda 9.0
	$ sudo apt-get purge --auto-remove libcud*
	$ sudo apt-get purge --auto-remove cuda*
	$ sudo apt-get purge --auto-remove nvidia*
	# also remove the container directory direcotory at /usr/local/cuda-9.0/

	# Important libs required with 4.14.x with Cuda 9.X
	$ sudo apt install libelf1 libelf-dev