Ever wondered how physics explains the infinite?
Ever wondered how physics explains the infinite?
Imagine you're trying to measure the exact position and momentum of a particle at the same time.
In quantum physics, there's a limit to how precisely we can know both the position and momentum of a particle. This idea is captured by a unique kind of space called Hilbert space, which allows us to work with infinite dimensions and still have a complete set of rules for measurement.
Example
If you try to measure a particle's position to a very high degree, the more you know about its position, the less you know about its momentum, and vice versa.
Remember this
The key insight is that precision in one aspect leads to uncertainty in another, a fundamental limit in quantum mechanics.
Text adapted from Wikipedia, licensed under CC BY-SA 4.0.
Inner product space
Inner product space generalizes Euclidean geometry
Riesz representation theorem
Riesz representation theorem connects Hilbert spaces with continuous dual spaces
Spectral theorem
Spectral theorem applies to normal operators on Hilbert spaces
Hahn–Banach theorem
Can you always stretch a stretchable fabric to cover a larger table?
Normed vector space
A Banach space is a complete normed vector space
Sigma-additive set function
A σ-additive set function maintains additivity for countably infinite sets
Swipe through 100 ML concepts daily
Open Pocket Polymath