∧, ∨, ∩, ∪, ∈, ∉, ∋, and a number of others!
At least the logical conjunction symbols can kind of be emulated with paired slashes: / and /, or be written more program like (&, |, and, or, &&, ||). At best, in programming one has to deal with ones operators being ‘built-in’ overloaded, or do it by hand o/.