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Joao's user avatar
Joao's user avatar
Joao
  • Member for 10 years, 9 months
  • Last seen more than 8 years ago
  • In the nullspace of a non-singular matrix
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profile for Joao at Mathematics Stack Exchange, Q&A for people studying math at any level and professionals in related fields http://math.stackexchange.com/users/flair/114495.png?theme=dark I study nonstandard differential galois hyperextensions and cyclic vector subchannels. Kidding. I just made those words up. That would be pretty cool if they did mean something though.
  • I am an honest man in a dishonest world.
  • I am thinking about changing my username to something interesting.
  • Woohoo! Just got my first gold badge!
  • Integrals are awesome- they're just an acquired taste
  • Check this out... Possibly the greatest picture ever-

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13
Meaning of $\frac{x-y}{y}$ versus $\frac{x}{y}-1$
Mar 13, 2014
question
12
Why can't you divide matrices?
Dec 9, 2013
question
9
Better Divisibility by 8
Jun 22, 2014
answer
5
Definite integrals with interesting results
Dec 8, 2014
question
5
Numbers with the property $\overline{a_1a_2a_3a_4\dots a_n}=a_1+a_2^2+a_3^3...a_n^n$
Aug 10, 2014
question
4
How many $2$'s are needed?
Dec 3, 2014
question
4
Lagrange interpolation for rational functions
Oct 30, 2014
answer
4
Find $C$ such that $x^2 - 47x - C = 0$ has integer roots, and further conditions
Oct 27, 2014
question
4
How many $3$ digit numbers with digits $a$,$b$ and $c$ have $a=b+c$
Aug 7, 2014
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3
How to prove that there are infinitely many primes without using contradiction [duplicate]
Dec 6, 2014
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Movie end credits software
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Software for erasing "permanently deleted" files