German mathematician’s slip up with constant affected variable (9)

'german mathematician's' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'slip up with constant affected variable' is the wordplay.
'up with' indicates anagramming the letters (letters get chucked up).
'constant' becomes 'c' (mathematical abbreviation).
'affected' becomes 'hit' (I've seen this in another clue).
'variable' becomes 'z' (algebra).
'slip' with its letters mixed up with 'c' makes 'lipsc'.
'lipsc'+'hit'+'z'='LIPSCHITZ'

Can you help me to learn more?