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KonKan
  • Member for 7 years, 7 months
  • Last seen more than a week ago
28 votes

Why does adding a term $5f'(t)$ to $5f''(t)+10f(t)=0$ cause damping?

23 votes

What is wrong with my proof by contradiction?

23 votes
Accepted

Good Introduction to Hopf Algebras with Examples

13 votes
Accepted

Meaning of the antipode in Hopf algebras?

10 votes
Accepted

Exercises to help a student become accustomed to Sweedler notation

10 votes
Accepted

Convolution in Hopf algebras

9 votes

Intuition behind definition of spinor

9 votes
Accepted

How to understand the coidea of a colagebra?

7 votes

Finding the equation of a circle

7 votes

Incorrect method to find a tilted asymptote

7 votes

Reference on correspondence between commutative Hopf Algebras and Groups

6 votes
Accepted

Product of two infinite summations

6 votes
Accepted

dual algebra of a coalgebra

6 votes

Summing over components of a basis: Coalgebra

6 votes
Accepted

Does it make geometric sense to say that open rectangles and open balls generate the same open sets

6 votes
Accepted

limit of $a_n=\sqrt{n^2+2} - \sqrt{n^2+1}$ as $n$→∞

6 votes

How to prove polynomials with degree $n$ does not form a vector space?

6 votes
Accepted

Intuitive Proof of the Chain Rule in 1 Variable

5 votes

Relation between braided Hopf algebra and usual Hopf algebra.

5 votes

tensor product of Hopf algebras and coalgebraic structure on the dual algebra

5 votes
Accepted

Two different comultiplications on a Hopf algebra

5 votes
Accepted

Finding a common factor of two coprime polynomials

5 votes

Example of an identity function that's not continuous

5 votes
Accepted

Prove $(3+\sqrt{11})^{1/3}$ is irrational.

5 votes
Accepted

Why do we say in limits that $x$ must approach a but not be equal to a

5 votes
Accepted

Compare two below natural numbers: $2016^{2017} < 2017^{2016}$

4 votes
Accepted

Example of two atlases on a manifold $M$ which give rise to different sets of smooth functions on $M$.

4 votes
Accepted

The range and domain of $o(x)=3+\sqrt{16-(x-3)^2}$

4 votes

How can I find $\displaystyle \lim_{n\to\infty} \sqrt{1 + {1 \over n}}$ using basic properties of limits?

4 votes
Accepted

Simplify $x! \le x(x-1)^{x-1}$ to $x! \le x^x.$

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