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if not, then what about the space of ... real-analysis general-topology continuity asked days ago vidyarthi gold badge silver badges bronze badges votes answers views let $s^ =\{(x,y):x^ +y^ = \}$ be the unit circle. prove that $g:[ )\to s^ $, $g(t)=(\cos( \pi t),\sin( \pi t))$ is not a homeomorphism...
, and this statement was given without proof. any hints/clarification would be appreciated. he first introduces the $... abstract-algebra number-theory algebraic-number-theory class-field-theory adeles asked feb at : locally unskillful gold badges silver badges bronze badges vote answers views why do...
matrices orthogonal-matrices matrix-exponential skew-symmetric-matrices asked jan at : matt dickau silver badges bronze badges votes answer views finding the matrix exponential of a nilpotent matrix let $a_n$ denote the $n imes n$ strictly upper triangular matrix given by $$ \left( egin{array}{cccccc...