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user332905
  • Member for 3 years, 4 months
  • Last seen more than a month ago
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Regarding significance of spectral variation under algebraic operations
@JochenGlueck I personally love this theory as its neat and elegant. My question arose as to how to explain to mathematicians of another area as to why this theory is significant.
asked
Regarding significance of spectral variation under algebraic operations
comment
Sharp, salient and opposite cones
Can you tell why an opposite cone is defined as $2a-C$ and not just $-C?$
revised
Sharp, salient and opposite cones
added 192 characters in body
asked
Sharp, salient and opposite cones
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Regarding definition of convex cone and apex
Ok. Thank you..
comment
Regarding definition of convex cone and apex
@SamHopkins Can you give an example of a cone with more than one apex?
asked
Regarding definition of convex cone and apex
awarded
 Student
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Regarding variation of spectra
So it is basically the set valued spectrum function that is upper semicontinuous. Am I right?
asked
Regarding variation of spectra
awarded
 Editor
awarded
 Informed