Mariano Suárez-Alvarez
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Apr
19
revised How to show $f(x) = x^2 + x + 1$ is continuous?
added 565 characters in body
Apr
19
revised How to show $f(x) = x^2 + x + 1$ is continuous?
added 565 characters in body
Apr
19
answered How to show $f(x) = x^2 + x + 1$ is continuous?
Apr
18
comment What's the relation between a fixed point and a root of a function?
The fixed points of a function $f$ are the same as the zeroes of the function $g(x)=f(x)-x$, and conversely, but these are two different functions.
Apr
18
comment What's the relation between a fixed point and a root of a function?
None, really. ${}$
Apr
18
comment zero object in the category of group schemes
Groups schemes are no the same as schemes: they have an "identity element". Try to find the zero object in the category of groups, first.
Apr
17
comment Literature request: Method for constructing projective manifolds
I guess that you are after toric varieties. You should most certainly look at Cox's book on the subject.
Apr
15
answered Showing that linear transformations $1, T, T^2, T^3 ,\dots $ do not span the set of linear transformations of $ \mathbb C^n$ into $ \mathbb C^n$
Apr
15
answered Showing that linear transformations $1, T, T^2, T^3 ,\dots $ do not span the set of linear transformations of $ \mathbb C^n$ into $ \mathbb C^n$
Apr
14
comment Isomorphism of tensor product involving a principal ideal
You should probably explain the context...
Apr
13
comment The Jacobson radical under maps
If you replace maximal ideal by left maximal ideal, everything works the same!
Apr
13
comment Is trace of regular representation in Lie group a delta function?
I will close this one. I suggest you edit the old one if you want to change it.
Apr
13
comment Is trace of regular representation in Lie group a delta function?
The simple answer is that there is no trace. You are trying to compute something that simply does not make sense.
Apr
13
comment Is trace of regular representation in Lie group a delta function?
Your question on MO was moved here already (you can find it at math.stackexchange.com/questions/1232328/…)
Apr
10
comment Finding a group that is not monomial
Have you found a way of doing this? It is a terribly bad plan to look for good ways to do something before even having even a mediocre way of doing it...
Apr
9
comment What's up with this endofunctor $\mathbf{Aff}_k \rightarrow \mathbf{Aff}_k$?
Great! Thanks. :-)
Apr
9
comment What's up with this endofunctor $\mathbf{Aff}_k \rightarrow \mathbf{Aff}_k$?
Can you please add the relevant information to the body of the question itself? These are not exactly well-known definitions...
Apr
9
comment What's up with this endofunctor $\mathbf{Aff}_k \rightarrow \mathbf{Aff}_k$?
I don't know what you mean by «set equipped with affine combination functions».
Apr
8
comment Least quadratic nonresidue modulo $p$ is a prime.
You should probably lookup the meaning of the word consequently :-)
Apr
8
comment canonical representation of three skew lines in $\mathbb{P}^3$
That's the good way to see it, I think.