1,463 reputation
915
bio website
location
age
visits member for 3 years, 11 months
seen 2 days ago

2d
comment “Isomorphy” in mathematical texts
I have added an explanation.
2d
revised “Isomorphy” in mathematical texts
explanation
2d
comment “Isomorphy” in mathematical texts
I there is common agreement on that, can feel free to migrate it.
2d
asked “Isomorphy” in mathematical texts
Oct
7
asked Characteristic polynomial and Jordan normal form of permutation matrices
Oct
7
comment Term of partially ordered set with “levels”
Not necessarily, although in the application I have in mind, the sets $X_i$ are antichains. Thanks for making me aware of that.
Oct
7
asked Term of partially ordered set with “levels”
Oct
2
revised Basis of vector space invariant under group action (of symmetric group)
added application
Oct
2
comment Basis of vector space invariant under group action (of symmetric group)
What is $c_2$? However, indeed, such a basis might not exist, but how can this be shown?
Oct
2
asked Basis of vector space invariant under group action (of symmetric group)
Sep
10
comment Approximate root of $\alpha x - \beta y$ over $\mathbb Z$ except origin
@RobertIsrael Can you give more hints? I have no clue where to start with this.
Sep
10
comment Approximate root of $\alpha x - \beta y$ over $\mathbb Z$ except origin
Assuming $\beta > 0$, I see the equivalences. But what does it tell?
Sep
10
comment Approximate root of $\alpha x - \beta y$ over $\mathbb Z$ except origin
Has been a late night. Of course, the origin is excluded.
Sep
10
revised Approximate root of $\alpha x - \beta y$ over $\mathbb Z$ except origin
added 20 characters in body; edited title
Sep
9
asked Approximate root of $\alpha x - \beta y$ over $\mathbb Z$ except origin
Jul
18
comment Canonical term for $\overline X / X$ where $X$ is a normed space.
This appears in the theory of Hilbert complexes, as quotient of the closure of the boundaries by the boundaries. More, generally, for Banach complexes see: link.springer.com/article/10.1007%2FBF02922133?LI=true
Jul
17
asked Canonical term for $\overline X / X$ where $X$ is a normed space.
Jul
3
asked Empty set in a simplicial complex
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive