What is the mistake in calculating such a commutator?
94627
What's wrong with this derivation that $i\hbar = 0$?
58445
What does the Canonical Commutation Relation (CCR) tell me about the overlap between Position and Momentum bases?
103352
Is there an error in this question on vector addition and subtraction?
42531
Calculating commutators in quantum mechanics symbolically with the help of Mathematica
56933
What is the connection between Poisson brackets and commutators?
25430
When is matrix multiplication commutative?
34758
Cancellation Law for Direct Sums - What is wrong with this argument?
2874
Commuting in Matrix Exponential
95145
Does $\exp(2ir\pi)$ equal $1$? What's wrong?
39908
Finding the error in this proof that 1=2
97800
Exterior power "commutes" with direct sum
35274
What is wrong with this substitution?
1002
Where is the flaw in this "proof" that 1=2? (Derivative of repeated addition)
149759
Problem on multiplication formulae.
143923
Why can the cross product of two vectors be calculated as the determinant of a matrix?
102306
Why is this simple calculation of two doubles inaccurate?
56745
Why does this not work with an imaginary exponent?