Extending Knuth up-arrow/hyperoperations to non-positive values
40239
Does anything precede incrementation in the operator "hierarchy?"
28109
Conjectural closed-form representations of sums, products or integrals
137815
Additive but not $\sigma$-additive function
140554
Post-increment Operator Overloading
118400
Is there a monotonic function discontinuous over some dense set?
86004
Why are slice and range upper-bound exclusive?
19966
How to customize derivative behavior via upvalues?
25874
Showing that a certain map is not flat by explicit counterexample
114355
Speeding up the built-in Rudin-Shapiro and Thue-Morse sequence functions
127664
Inverse elements in the absence of identities/associativity.
112404
Eliminating discontinuities for increasing function
32578
Skew-symmetric function
138784
Is the differentiation operator an open mapping?
124124
Negate epsilon-delta continuity
114830
bit-wise operation unary ~ (invert)
73056
Operation that makes the negative real numbers, $\mathbb{R}_{<0}$, a group
118560
Ordered N-Tuples as Cartesian Products of Indexed Families