I would like to know which journal is an appropriate outlet for the results described below.
I recently came across a particular neural-network training algorithm. The algorithm is based on a result from matrix calculus. I found a simple proof of the result although existing proofs are very tedious, though not very difficult.
I have to say that the result/proof is not very mathematically important, but it might be of interest to the machine-learning community because it is used in several algorithms.
I'd like to submit (and hopefully publish) the proof. Since the proof is quite short, I'd believe that note/letter journals would be preferable. Please let me know which journals would be appropriate outlets.
Thank you.