AbstractionOfMe

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location California, U.S.A.
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visits member for 1 year, 1 month
seen May 17 at 6:05
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http://regexr.com?32aec ( http://regexr.com?32sjn ) to convert math tags

http://www.youtube.com/watch?feature=endscreen&v=QeazUS1c1hA&NR=1


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May
11
 asked 2 linear systems: same solution set implies row equivalence; how to prove?
May
10
 answered Intuition in algebra?
May
6
 comment Integer combination of $V\subseteq\mathbb{Z}^n = (1, 1, 1, \ldots)$?
Well, thanks anyway all.
May
6
 revised Integer combination of $V\subseteq\mathbb{Z}^n = (1, 1, 1, \ldots)$?
tried to make it a bit clearer
May
6
 revised Integer combination of $V\subseteq\mathbb{Z}^n = (1, 1, 1, \ldots)$?
add clarification
May
4
 revised Integer combination of $V\subseteq\mathbb{Z}^n = (1, 1, 1, \ldots)$?
added 68 characters in body
May
4
 asked Integer combination of $V\subseteq\mathbb{Z}^n = (1, 1, 1, \ldots)$?
Apr
30
 revised Constructing all semigroups over a given set without backtracking
added 25 characters in body
Apr
30
 revised Constructing all semigroups over a given set without backtracking
changed the useless extra text required because question was too short to something a bit less useless; added 9 characters in body; deleted 6 characters in body
Apr
29
 comment Constructing all semigroups over a given set without backtracking
Yes :) something besides constructing them blindly and removing non-associative ones.
Apr
29
 revised Visualizing identity $m\le3n-6$ for simple connected finite planar graphs
edited title
Apr
29
 asked Constructing all semigroups over a given set without backtracking
Apr
28
 awarded  Supporter
Apr
28
 revised Formalizing the “fitting together” of objects
deleted 450 characters in body
Apr
28
 comment Formalizing the “fitting together” of objects
Thanks, that's very helpful.
Apr
28
 asked Visualizing identity $m\le3n-6$ for simple connected finite planar graphs
Apr
27
 revised Formalizing the “fitting together” of objects
added 95 characters in body
Apr
27
 comment Formalizing the “fitting together” of objects
Okay so define the cube as $-0.5 \leq x,y,z \leq 0.5$ and square pyramids $z \leq x,y \leq -z$, $-z \leq x,y \leq z$, $-x \leq y,z \leq x$, $x \leq y,z \leq -x$, $-y \leq x,z \leq y$, $y \leq x,z \leq -y$. Now I'm trying to see an easy way to show that any point $-0.5 \leq a,b,c \leq 0.5$ is in one of those.
Apr
27
 revised Formalizing the “fitting together” of objects
deleted 4 characters in body
Apr
27
 revised Formalizing the “fitting together” of objects
added 245 characters in body
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