jbergman's latest activity
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Jjbergman reacted to PeroK's post in the thread Undergrad Sean Carroll's description of the Many Worlds interpretation with
Like.
The ##\alpha## and ##\beta## apply initially to the state of an electron, but after the interaction with a measuring device, they apply... -
Jjbergman replied to the thread Graduate Trivial fiber bundle vs product space.Not following all the arguments that closely but I think I agree with Martin. Once you learn some category theory, products are defined...
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Jjbergman reacted to martinbn's post in the thread Graduate Trivial fiber bundle vs product space with Like.
Yes, but what is the difference? You say that one is canonical and the other not, but in what sense. If you have that ##A\times B## is...
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Jjbergman reacted to martinbn's post in the thread Graduate Trivial fiber bundle vs product space with Like.
What is canonical about a product? A product ##A\times B## can be written as a product in many ways, say as ##A\times f(B)## for any...
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Jjbergman reacted to PeroK's post in the thread Finding the number of ways to arrange identical balls in a circle (3 different colors) with Like.
The idea of fixing the yellow ball is that it picks out the set of solutions that cannot be equivalent under rotation. If there were...
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Jjbergman replied to the thread Undergrad One does not “prove” the basic principles of Quantum Mechanics.I think the context is that the book is from a mathematician who usually proves things. So, it's mostly just making the distinctions...
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Jjbergman reacted to Herman Trivilino's post in the thread Undergrad One does not “prove” the basic principles of Quantum Mechanics with Like.
That's true for the basic principles of every physical theory. Look at it this way. A proof starts with assumptions and uses deductive...