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OpenStudy (anonymous):
show that -supS=-inf(-S)
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OpenStudy (anonymous):
sorry...got mistakes
OpenStudy (anonymous):
supS=-inf(-S) this is the correct one
OpenStudy (anonymous):
What subject is this?
OpenStudy (anonymous):
supremum and infimum
OpenStudy (experimentx):
a > S => -a < -S or -a is infimum of -S a = -(-a) = -(infimum -S)
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OpenStudy (experimentx):
let a be supremum of A
OpenStudy (anonymous):
thanks
OpenStudy (experimentx):
yw
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