Reputation
11,388
Next privilege 15,000 Rep.
Protect questions
Badges
6 29 84
Impact
~330k people reached

May
27
comment Determining whether a piecewise function is odd or even or neither
Can't you use your trick for all the pieces?
May
27
reviewed Reviewed lagrange multipliers fails
May
27
reviewed Reviewed Basic ring isomorphism question
May
27
comment factorization of 2 numbers
@DoubleAA, good to know. Peter, where was that stated in the net? Can you provide a link? How did you 1005693665747024080598971?
May
27
reviewed Looks OK Proving $\prod _{k=j}^n \frac{p_{k+1}}{p_k} = \frac{p_{n+1}}{p_j}\!\!,\;\;1\le j\!<\!n$
May
27
reviewed Reviewed factorization of 2 numbers
May
27
comment factorization of 2 numbers
Peter, this is the third account you created: math.stackexchange.com/users/79589/peter , math.stackexchange.com/users/79596/peter and this one. Please ask a moderator to merge them! I flagged your account to draw a moderator's attention...
May
27
comment Examples of finite nonabelian groups.
View a complete list of particular groups...
May
26
revised Certain Sums of Conjugacy Class Sizes of Symmetric Groups
deleted 28 characters in body; edited title
May
26
comment Smallest prime of the form 41033333333…?
Why are you interested? What have you tried?
May
26
reviewed No Action Needed Smallest prime of the form 41033333333…?
May
26
revised Certain Sums of Conjugacy Class Sizes of Symmetric Groups
added 246 characters in body
May
26
revised Certain Sums of Conjugacy Class Sizes of Symmetric Groups
added 172 characters in body
May
26
answered Certain Sums of Conjugacy Class Sizes of Symmetric Groups
May
26
asked Certain Sums of Conjugacy Class Sizes of Symmetric Groups
May
26
reviewed No Action Needed How to show that $\frac{1}{(1-\frac{1}{4}z^{-1})(1-\frac{1}{4}z)} = \frac{-4z^{-1}}{(1-\frac{1}{4}z^-1)(1-4z^{-1})}$
May
25
reviewed Reviewed when is the region bounded by a Jordan curve “skinny”?
May
25
reviewed Reopen How to write $\pi$ as a set in ZF?
May
24
reviewed Reviewed Where to find the proof for the isomorphism between the (2n-1)_th homotopy group of Aut(V) to Z?
May
24
comment A problem on matrices: Find the value of $k$
Calculate the eigenvalues of $\[\dots \]$ and use what you've learned here...