1h
awarded Popular Question
2d
asked Densely-defined operator with closed range: conditions for operator closed
Apr
15
awarded Popular Question
Apr
10
revised Operator theory of the Hessian
clarified question
Apr
10
comment Operator theory of the Hessian
This cannot be a closed operator. What is the Hessian in $L^2$ of, say, a non-continuous function?
Apr
10
asked Operator theory of the Hessian
Mar
22
asked "Er anerkennt die Grenzen" - Korrektes Deutsch?
Mar
20
awarded Nice Question
Mar
19
awarded Inquisitive
Mar
19
asked \wedge and \vee juxtaposed in one symbol
Mar
16
awarded Popular Question
Mar
12
comment Sparse matrix-matrix multiplication
Up vote by me, because of the original downvote. The linked article is relevant for the topic.
Mar
11
awarded Inquisitive
Mar
10
asked Preconditioning symmetric Schur complement
Mar
9
awarded Yearling
Mar
9
awarded Yearling
Mar
9
asked This tikz-diagram has crooked arrows
Mar
7
asked Iterated Schur complement for block matrices
Feb
28
awarded Yearling
Feb
28
awarded Yearling
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