513 reputation
319
bio website
location Canada
age 38
visits member for 3 years, 10 months
seen Oct 14 at 19:08

To see Latex in chat: go to http://www.math.ucla.edu/~robjohn/math/mathjax.html Click on bookmark every time I enter the Chat

To hide text for hints: >!


Mar
17
reviewed Reviewed Show: grad f (x + y) = grad f (x) + grad f (y)
Mar
17
comment Show: grad f (x + y) = grad f (x) + grad f (y)
saying x,y are in $R^2$ already implies x,y (hence x+y) are in the domain of $f$ and $g$.
Mar
17
revised What is the relation between $I_2(ℝ)$ and $GL_2(ℝ)$?
changed Latex writing
Mar
17
suggested approved edit on What is the relation between $I_2(ℝ)$ and $GL_2(ℝ)$?
Mar
16
reviewed No Action Needed Prove that $\mathcal{P}(A)⊆ \mathcal{P}(B)$ if and only if $A⊆B$.
Mar
16
reviewed No Action Needed Is there an intuitive non-mathematical way to show $\sum_n 1/n=\infty$?
Mar
16
reviewed No Action Needed Football League coincidence
Mar
16
reviewed No Action Needed Probability of collision in S-box
Mar
16
reviewed Reviewed Math vs Probability vs Statistics
Mar
16
reviewed No Action Needed Area of a parallelogram, vertices $(-1,-1), (4,1), (5,3), (10,5)$.
Mar
16
awarded  Custodian
Mar
16
reviewed No Action Needed Application of prime number theorem
Mar
16
reviewed No Action Needed If $A$ is a set, then $\mathrm{card}(P(A)) = 2^{\mathrm{card} A}$.
Mar
15
awarded  Organizer
Mar
15
revised Converting Prime Numbers from Base $10$ to Base $4$
a better writing and formatting, added new tag
Mar
15
reviewed Reviewed Converting Prime Numbers from Base $10$ to Base $4$
Mar
15
suggested approved edit on Converting Prime Numbers from Base $10$ to Base $4$
Mar
14
comment Determining the dimensions of the null space and column space of a matrix
"use this to find rank A" can it get more simpler than that?
Mar
14
awarded  Custodian
Mar
14
reviewed No Action Needed Determining the dimensions of the null space and column space of a matrix