1. Recondite: Abstruse
2. Abstruse: Enigmatic
3. Enigmatic: Cabalistic
4. Cabalistic: Arcane
5. Arcane: Esoteric
6. Esoteric: Hermetic
7. Hermetic: Recondite
(This all started when I saw the definition of recondite including the word "abstruse")
"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."
abstruse : arcane
arcane : esoteric
Found this going back and forth in 4 different online dictionaries.
In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.