# Functions returning unexpected results for symbolic expressions

The functions `min`

and `max`

are evaluated using Python builtin functions, and need to be replaced by `min_symbolic`

and `max_symbolic`

to handle symbolic expressions. Sage overrides other Python functions, for example `ceil`

and `floor`

, and presumably all Sage defined functions behave as expected with symbolic expressions as arguments. `abs`

in particular is an explicit alias of `abs_symbolic`

.

What other commonly used functions fall back on Python builtin functions and produce unexpected results when handling symbolic expressions?