Positive[x] gives True if x is a positive number.
PrecedesEqual[x, y, ...] displays as x \[PrecedesEqual] y \[PrecedesEqual] ....
Precedes[x, y, ...] displays as x \[Precedes] y \[Precedes] ....
PrecedesSlantEqual[x, y, ...] displays as x \[PrecedesSlantEqual] y \[PrecedesSlantEqual] ....
PrecedesTilde[x, y, ...] displays as x \[PrecedesTilde] y \[PrecedesTilde] ....
Proportional[x, y, ...] displays as x \[Proportional] y \[Proportional] ....
Proportion[x, y, ...] displays as x \[Proportion] y \[Proportion] ....
ReverseElement[x, y, ...] displays as x \[ReverseElement] y \[ReverseElement] ....
ReverseEquilibrium[x, y, ...] displays as x \[ReverseEquilibrium] y \[ReverseEquilibrium] ....
ReverseUpEquilibrium[x, y, ...] displays as x\[ReverseUpEquilibrium]y\[ReverseUpEquilibrium]....