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# bc config file, define constants and functions | |
# all units from physics.nist.gov (if available) | |
## math constants | |
pi=4.0*a(1.0) | |
phi=(1.+sqrt(5.))/2. | |
## physics constants | |
g=6.6743*(10^-11) # gravitational, (m3 kg-1 s-2) | |
h=6.62607015*(10^-34) # planck, (J s) |
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#!/bin/bash | |
pyver=3.9 | |
if [ -n "$1" ]; then | |
pyver="$1" | |
fi | |
pyroot=$HOME/opt/pythonidae | |
pyftp="https://www.python.org/ftp/python" | |
quitexit(){ |
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# ~/.bashrc: executed by bash(1) for non-login shells. | |
# ______________________________________________________________________ | |
# / \ | |
# ( Ubuntu defaults ) | |
# \______________________________________________________________________/ | |
# | |
# If not running interactively, don't do anything | |
case $- in *i*);; *) return;; esac |
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# PS1 setting script, features: | |
# Regular use: (opt1/opt2 means opt1 has precedence) | |
## user@host|cmd_time/clock|pwd$exit_code/''> | |
## print in color (if available) | |
## first print user@host (green): | |
## host color is bold if SSH session. | |
## cmd_time (green|yellow|red) || clock (green): | |
## clock time or cmd_time (if cmd_time > 20s). |
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(* found at https://community.wolfram.com/groups/-/m/t/1313893 *) | |
(* \ | |
modified as per reddit user u/wxehtexw to integrate from -inf instead \ | |
of 0 *) | |
FractionalD[\[Alpha]_, f_, x_, opts___] := | |
Integrate[(x - t)^(-\[Alpha] - 1) (f /. x -> t), {t, -Infinity, x}, | |
opts, GenerateConditions -> False]/Gamma[-\[Alpha]] | |
FractionalD[\[Alpha]_?Positive, f_, x_, opts___] := | |
Module[{m = Ceiling[\[Alpha]]}, | |
If[\[Alpha] \[Element] Integers, D[f, {x, \[Alpha]}], |
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#!/usr/bin/env python3 | |
# Find chemical symbols and surround them with \ce{ Symbol } | |
# Problem words: I, HOW, In, degrees K. Add words to exlist to ignore them. | |
# Also find lines of the type: '(a) .*' and surround them with '\wrongchoice{ (a) .*}' | |
import re, sys | |
if len(sys.argv) < 2 : | |
print('Usage:> {} <filename>'.format(sys.argv[0])) | |
sys.exit(1) |
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! Test program for dgesvx | |
! compile command used: | |
!ifort dgesvx_tester.f90 -L/opt/intel/composer2018/mkl/lib/intel64 -lmkl_core -lmkl_intel_lp64 -lmkl_sequential -lpthread | |
program main | |
implicit none | |
external :: dgemv | |
external :: dgesv | |
external :: dgesvx | |
integer, parameter :: dp = selected_real_kind(15,300) |
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''' | |
===================================== | |
Rotating 3D voxel animation | |
===================================== | |
Demonstrates using ``ax.voxels`` with uneven coordinates | |
''' | |
import matplotlib.pyplot as plt | |
import numpy as np | |
from mpl_toolkits.mplot3d import Axes3D |
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''' | |
matplotlib must be developer release for voxel support | |
install instructions: | |
https://matplotlib.org/devdocs/users/installing.html | |
''' | |
import matplotlib.pyplot as plt | |
import numpy as np | |
from mpl_toolkits.mplot3d import Axes3D | |
import matplotlib.animation as manimation |
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module kinds | |
save | |
integer, parameter :: dp = selected_real_kind(15, 307) | |
end module kinds | |
program am_timed | |
use kinds, only : dp |
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