"Abstract nonsense" is a nonderogatory term that is commonly used by mathematicians when skipping over parts of an argument that can be proven through a commonly used long and theoretical argument with which readers are expected to be familiar. The usual usage is something like, "...from which the result can be shown through abstract nonsense."
This entry contributed by Wiktor K. Macura
Explore with Wolfram|Alpha
Cite this as:
Macura, Wiktor K. "Abstract Nonsense." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/AbstractNonsense.html