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age 43
visits member for 2 years, 5 months
seen Dec 14 at 18:42

Nov
4
revised Trace norm identity (in bra-ket notation)
added 29 characters in body
Oct
9
revised How is greater than defined for real numbers?
Added how to define the topology without comparison operators
Oct
4
revised Is the limit of the dual spaces the dual space of the limit?
Added clarification that I mean the algebraic dual space
Sep
14
revised Write the Fourier series to $f(t)=|\sin t|$
Improved math formatting
Sep
7
revised Does $V_1,V_2,V_3$ span $R^4$
Fixed LaTeX syntax for matrices
Sep
6
revised Find the domain of the function $f(x) =\frac{x+4}{x^2-9}$
TeXified
Apr
21
revised Plotting a region in $3D$ space
added 74 characters in body
Apr
21
revised Plotting a region in $3D$ space
Added labels and image example
Apr
21
revised Is it possible that “A counter-example exists but it cannot be found”
added 32 characters in body
Apr
21
revised Is it possible that “A counter-example exists but it cannot be found”
Added a specific formalization to make the post correct
Apr
13
revised If a nonempty set of real numbers is open and closed, is it $\mathbb{R}$? Why/Why not?
Added a short initial description about what the proof does
Apr
13
revised Proof that $\det(A)=\det(A^T)$ using permutations.
edited title
Apr
13
revised Multiplying Adjacent Matrices?
added 2 characters in body
Apr
13
revised Multiplying Adjacent Matrices?
mathematics formatting
Jan
26
revised 100 prisoners and a light bulb
added solution when the starting day is not known
Aug
19
revised Prove a transformation is skew-symmetric
edited title
Aug
7
revised What is the Peano definition of subtraction?
math formatting
Aug
5
revised Find the remainder when $11^{2013}$ is divided by $ 61$
edited title
Aug
2
revised Whether $(0,1)$ and $(0,1]$ are homeomorphic
edited body
Jul
31
revised What is the definition of an extremum of a function?
deleted 1 characters in body; edited title