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parsiad
  • Member for 9 years, 2 months
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106 votes
Accepted

Are there dictionaries in math?

57 votes

What's the difference between theorem, lemma and corollary?

36 votes
Accepted

Show that $e^{\sqrt 2}$ is irrational

28 votes
Accepted

LU Decomposition Steps

26 votes

Are we allowed to compare infinities?

22 votes

Sum of all natural numbers is 0?

21 votes

Can I always order a countable set of numbers?

14 votes

Is the null set a subset of every set?

13 votes

Is it ok to use Kronecker delta function to find if one of its variables belongs to a half open interval?

13 votes

What does it mean when dx is put on the start in an integral?

12 votes

Show the differential operator is bounded

12 votes
Accepted

"Distance" between summands in Taylor Series of Cosine

11 votes

Show that the closure of a set A is the smallest closed set containing A.

11 votes

Can we say $\sqrt {ab} \ge \min \{ a,b\} $?

10 votes

What is the span of an infinite set?

9 votes
Accepted

Sequence related to solutions of the equation $x^x=c$

8 votes

Why is $e$ the number that it is?

8 votes
Accepted

Uniform convergence and pointwise convergence, understanding

8 votes

Does there exist a closed set which is an intersection of a collection of infinite open sets?

8 votes
Accepted

Integral of the square of the normal distribution.

7 votes

Is $x^{-0}$ defined?

7 votes
Accepted

Evaluating $\frac{1^2}{2^1}+\frac{3^2}{2^2}+\frac{5^2}{2^3}+\cdots$ using sigma notation

7 votes
Accepted

Very difficult limit

7 votes
Accepted

Showing that the square of Brownian motion, minus time, is a martingale

7 votes

Why do we call this transformation non-singular?

7 votes
Accepted

Understanding the proof $C(X)$ is complete

7 votes

How to show that $\overline{zw}=\overline{z}\,\overline{w}$?

7 votes
Accepted

What is the meaning of the PI function.

7 votes
Accepted

Recursively appending mean to list: Is there a closed form?

7 votes
Accepted

Does $f(x)>g(x)$ imply $\frac{d}{dx}f(x)>\frac{d}{dx}g(x)$?

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