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seen Aug 6 at 10:02

Jul
2
awarded  Curious
Jun
5
comment Is this subset of a finite metric space already named?
Apologies for the confusion. I agree that there could in general be more than one $S_k$ satisfying my requirement but was wondering if there's a generic term for them and in particular what properties they have e.g. how small they can be (although your discrete metric example suggests that answer is $1$ for $k=1$).
Jun
5
asked Is this subset of a finite metric space already named?
Apr
9
accepted Taking Limits with Binomial Coefficients
Apr
9
revised Taking Limits with Binomial Coefficients
Corrected question to refer to asymptotics rather than limits.
Apr
9
asked Taking Limits with Binomial Coefficients
Feb
12
awarded  Informed
Feb
12
asked Bounding one binomial coefficient with another
Nov
29
accepted Unitary map between sets of vectors
Nov
27
comment Unitary map between sets of vectors
@MhenniBenghorbal Is that equivalent to what I said about the pairwise inner products being equal? i.e. the structure of the sets remains unchanged or am I missing the point?
Nov
27
asked Unitary map between sets of vectors
Nov
22
asked Probability distribution for a string given information about substrings
Mar
4
awarded  Supporter
Mar
4
accepted Rank of matrix products
Mar
4
comment Rank of matrix products
@DonAntonio I probably haven't been accurate in my terminology but I mean something like: Let $k_1$, $k_2$ and $k_3$ be vectors in the respective kernels, then these vectors are linearly independent.
Mar
4
comment Rank of matrix products
So my thoughts so far is that for this to be true $V_1$ should have two independent vectors in it's kernel. The kernel of $A_1$ is certainly one of these and something like $A_1^{-1}ker(A_2)$ would be the other but it's not clear to me that it's possible to use the inverse of $A_1$ in the definition seeing as $A_1$ is by definition singular. Does that make sense?
Mar
4
asked Rank of matrix products
Jan
28
awarded  Editor
Jan
28
revised Centre of a spherical triangle
added 119 characters in body
Jan
22
comment Centre of a spherical triangle
@HagenvonEitzen. So say I wanted to calculate the center of the inscribed circle. Would this then be $[|v_2-v_3|v_1+|v_1-v_3|v_2+|v_2-v_1|v_3]$ (normalised to ensure it lies on the unit sphere)? Would I be right in thinking that projecting back through the origin would give the center for the other spherical triangle that's been defined?