Good functional analysis book by Erwin Kreyzig

venkat
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hi!
there is a good functional analysis book by Erwin Kreyzig...which has hilbert spaces and banach spaces and stuff!
 
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Cool, what's the title? I like his book on math methods for engineers.
 
Originally posted by Tom
Cool, what's the title? I like his book on math methods for engineers.
Introductory Functional Analysis with Applications
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!

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