gagern

# USE=python_targets_python3_5 emerge --nodeps -1 blender


!!! Problem resolving dependencies for media-gfx/blender

!!! The ebuild selected to satisfy "blender" has unmet requirements.
- media-gfx/blender-2.78a-r1::gentoo USE="boost bullet dds doc elbeem ffmpeg fftw game-engine jack jpeg2k nls openexr openmp sdl sndfile tiff -collada -colorio -cuda -cycles -debug -headless -jemalloc -libav -llvm -man -ndof -openal -opencl -openimageio -opensubdiv -openvdb -player -test -valgrind" ABI_X86="64" PYTHON_TARGETS="-python3_5"

  The following REQUIRED_USE flag constraints are unsatisfied:
    python_targets_python3_5

gagern

# # See https://forums.gentoo.org/viewtopic-t-1050078.html and https://bugs.gentoo.org/show_bug.cgi?id=554070

# emerge --pretend --verbose --update --deep --newuse media-gfx/imagemagick media-gfx/graphicsmagick @world 2>&1

These are the packages that would be merged, in order:

Calculating dependencies  .. ... ...... .............. ... . . ... ... . ..... .. ........... .. . ............ .. ...... done!
[ebuild     U  ] app-arch/xz-utils-5.2.3::gentoo [5.2.2::gentoo] USE="nls threads -static-libs" ABI_X86="32 (64) (-x32)" 1.456 KiB
[ebuild     U  ] sys-devel/gnuconfig-20170101::gentoo [20161104::gentoo] 49 KiB
[ebuild     U  ] sys-process/lsof-4.89-r1::gentoo [4.89::gentoo] USE="ipv6 -examples -rpc (-selinux) -static" 767 KiB

gagern

See http://math.stackexchange.com/q/1954845/35416
A Bézier curve has extremal curvature if the parameter is a root of the following polynomial:

   t^7*(-4*x1^2*x2^2*y1^2 + 24*x1*x2^3*y1^2 - 36*x2^4*y1^2 + 16*x1^2*x2*x3*y1^2 - 120*x1*x2^2*x3*y1^2 + 216*x2^3*x3*y1^2 - 16*x1^2*x3^2*y1^2 + 192*x1*x2*x3^2*y1^2 - 468*x2^2*x3^2*y1^2 - 96*x1*x3^3*y1^2 + 432*x2*x3^3*y1^2 - 144*x3^4*y1^2 - 8*x1^2*x2*x4*y1^2 + 56*x1*x2^2*x4*y1^2 - 96*x2^3*x4*y1^2 + 16*x1^2*x3*x4*y1^2 - 176*x1*x2*x3*x4*y1^2 + 408*x2^2*x3*x4*y1^2 + 128*x1*x3^2*x4*y1^2 - 552*x2*x3^2*x4*y1^2 + 240*x3^3*x4*y1^2 - 4*x1^2*x4^2*y1^2 + 40*x1*x2*x4^2*y1^2 - 88*x2^2*x4^2*y1^2 - 56*x1*x3*x4^2*y1^2 + 232*x2*x3*x4^2*y1^2 - 148*x3^2*x4^2*y1^2 + 8*x1*x4^3*y1^2 - 32*x2*x4^3*y1^2 + 40*x3*x4^3*y1^2 - 4*x4^4*y1^2 - 4*x2^2*y1^4 + 16*x2*x3*y1^4 - 16*x3^2*y1^4 - 8*x2*x4*y1^4 + 16*x3*x4*y1^4 - 4*x4^2*y1^4 + 8*x1^3*x2*y1*y2 - 48*x1^2*x2^2*y1*y2 + 72*x1*x2^3*y1*y2 - 16*x1^3*x3*y1*y2 + 120*x1^2*x2*x3*y1*y2 - 144*x1*x2^2*x3*y1*y2 - 216*x2^3*x3*y1*y2 - 48*x1^2*x3^2*y1*y2 - 72*x1*x

gagern

gagern

# Steps to reproduce the example from
# http://stackoverflow.com/q/39144006/1468366

git init .
echo a > txt
git add txt
git commit -m a
echo a > txt; git commit -a -m a
echo b > txt; git commit -a -m b
echo c > txt; git commit -a -m c

gagern

html,body,div,span,label{
    margin: 0px;
    padding: 0px;
    border: none;
}

div.marker {
    width: 6px;
    height: 6px;
    border-radius: 3px;

gagern

java.lang.NullPointerException
	at sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1264)
	at sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:219)
	at sun.awt.FontConfiguration.init(FontConfiguration.java:107)
	at sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:774)
	at sun.font.SunFontManager$2.run(SunFontManager.java:431)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.font.SunFontManager.<init>(SunFontManager.java:376)
	at sun.awt.FcFontManager.<init>(FcFontManager.java:35)
	at sun.awt.X11FontManager.<init>(X11FontManager.java:57)

gagern

# http://math.stackexchange.com/q/1798630/35416

def polycycle(n, collected):
    cf = CyclotomicField(n)
    zeta = cf.gen()
    corner = -2*(1 + zeta)/(1 + zeta + 1 + 1/zeta)
    center = [corner*zeta^k for k in range(n)]
    gra = []
    for m in range(3, 7):
        mn = (m - 2)*n

gagern

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;

class EventDump extends KeyAdapter {

    public static void main(String[] args) {
        new EventDump();
    }

gagern

sage: # http://math.stackexchange.com/q/1721496/35416
sage: # After Möbius transformations, the problem has 7 real degrees of freedom
sage: PR1.<x,y,c,e,f,m,n> = ZZ[]
sage: # We cancel common factors after almost every step to keep the polynomials shorter
sage: def simpl(v):
...       try:
...           return v.parent()(v / gcd(v.list()))
...       except:
...           return v
sage: # Möbius geometry: a circle is a 4 element vector of the form