2 ms·
>> He does this to justify that we can define a norm over C Yeah, but computing z* really involves taking apart the complex number and fiddling with the real c
by phkahler 2y ago
>> He does this to justify that we can define a norm over C
Yeah, but computing z* really involves taking apart the complex number and fiddling with the real coefficient of the imaginary part. zz* looks like an operation in C, but it's kind of not.
- tczMUFlmoNk 2y agoFor a real number `x`, does computing `-x` require "taking apart the real number and fiddling with the sign bit"? I think of negation as a real operation in R, namely a reflection about the origin, and conjugation a a real operation in C, namely a reflection about the real axis.