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 Excavator
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Feb
16
awarded  Excavator
Feb
16
revised What exactly is Laplace transform?
spelling of "Laplace"
Feb
7
reviewed Approve Proving replacement theorem?
Feb
7
answered Can a complex argument into this function ever yield a real result?
Feb
7
reviewed Approve Range of the expression $n^n (\frac{n+1}{2})^{2n}$
Dec
5
comment How to write a proof of $ A\setminus B = \emptyset \leftrightarrow A \subseteq B$
If $A\setminus B$ is empty, it would mean that when you took $B$ from $A$, all of $A$ disappeared. Could this happen if $A$ was not a subset of $B$?
Dec
5
comment How to write a proof of $ A\setminus B = \emptyset \leftrightarrow A \subseteq B$
You should show that $A \setminus B=\emptyset$ implies $A \subseteq B$ and then show that $A \subseteq B$ implies $A \setminus B = \emptyset$.
Dec
5
revised Laurent Series for $\csc(z)$
added 1 character in body
Nov
21
reviewed Approve Can I show $\sum_{i=1}^n 1/{i^2} \le 2$ without calculus?
Oct
30
awarded  Good Answer
Oct
7
reviewed Approve When is $0$ ever used in real life?
Sep
18
comment Monotone subsequences in a sequence of $n^2+1$ distinct real numbers
Subsequences can skip elements
Sep
17
awarded  Nice Answer
Sep
8
awarded  Yearling
Apr
12
awarded  Custodian
Mar
29
reviewed Approve Solve $(z+2) /( z-3i) = 4+2i$ for $z$ in complex numbers
Mar
23
reviewed Approve About absolute value
Mar
23
reviewed Approve Defining a Bounded linear functional
Feb
27
awarded  Custodian
Sep
8
awarded  Yearling