user
26,272
reputation
My recent answers that I like:
https://math.stackexchange.com/q/3219855
https://math.stackexchange.com/q/3176365
https://math.stackexchange.com/q/3149329
https://math.stackexchange.com/q/3135468
https://math.stackexchange.com/q/3125532
https://math.stackexchange.com/q/3110807
https://math.stackexchange.com/q/2778602
https://math.stackexchange.com/q/2747090
https://math.stackexchange.com/q/2733815