Timeline for Matrix definition using some rules for the elements

9 events

when toggle format	what		by	license	comment
May 14, 2019 at 23:50	vote	accept	AYBRXQD
May 13, 2019 at 16:44	history	edited	AYBRXQD	CC BY-SA 4.0	edited body
May 13, 2019 at 15:49	comment	added	Roman		Your second definition still doesn't make sense. There is no $n$ on the left-hand side; so why is there one on the right?
May 13, 2019 at 15:35	history	edited	AYBRXQD	CC BY-SA 4.0	edited body
May 13, 2019 at 12:27	answer	added	Roman		timeline score: 2
May 13, 2019 at 12:21	comment	added	bill s		Try KroneckerDelta: for instance the first matrix could be: Range[4]^2 Array[KroneckerDelta, {4, 6}]
May 13, 2019 at 12:20	comment	added	Roman		Did you mean $\langle n\lvert M \rvert m \rangle = m^2 \delta_{m,n}+(1-m)(\delta_{m,n+2}+\delta_{m,n-2})$? As @JohnDoty says, your definitions as they are do not make sense. Also, please add the required ranges of the indices $n$ and $m$.
May 13, 2019 at 11:55	comment	added	John Doty		You have two different definitions. Do you mean that the matrix you seek is the sum of the ones you've defined?
May 13, 2019 at 11:34	history	asked	AYBRXQD	CC BY-SA 4.0