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As of Version 14.3 Mathematica outputs and properly interprets the symbol that looks like (but isn't) A^+ for the pseudo inverse of a matrix. &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/caf52ede-2684-4d16-8708-9cacf3117292
I created some notebooks on a mac and saved them in slideshow environment. I then made them available for my students to upload. However, on a Windows 10 machine it opens with no menu bar! I presume it will be alright if I save the files instead in...