real sign function

Summary

real sign function is an integer-valued function^[1].

Key Facts

• real sign function's image is recorded as Signum function.png^[2].
• real sign function's instance of is recorded as integer-valued function^[3].
• real sign function's instance of is recorded as sign function^[4].
• real sign function's instance of is recorded as function of a real variable^[5].
• real sign function's instance of is recorded as step function^[6].
• real sign function's instance of is recorded as odd function^[7].
• real sign function's facet of is recorded as trichotomy law^[8].
• real sign function's described by source is recorded as ISO 80000-2:2019 Quantities and units — Part 2: Mathematics^[9].
• real sign function's definition domain is recorded as set of real numbers^[10].
• real sign function's different from is recorded as complex sign function^[11].
• real sign function's different from is recorded as sine^[12].
• real sign function's different from is recorded as parity of a permutation^[13].
• real sign function's different from is recorded as Heaviside step function^[14].
• real sign function's image of function is recorded as set of 0 and ±1^[15].
• real sign function's defining formula is recorded as \sgn a = \begin{cases} 1 & a > 0 \ 0 & a = 0 \ -1 & a < 0 \end{cases}^[16].
• real sign function's defining formula is recorded as \sgn a = [a > 0] - [a < 0]^[17].
• real sign function's MathWorld ID is recorded as Sign^[18].
• real sign function's nLab ID is recorded as sign function^[19].
• real sign function's maintained by WikiProject is recorded as WikiProject Mathematics^[20].
• real sign function's in defining formula is recorded as a^[21].
• real sign function's in defining formula is recorded as {^[22].
• real sign function's in defining formula is recorded as \sgn a^[23].
• real sign function's in defining formula is recorded as [\cdot]^[24].
• real sign function's IEV number is recorded as 103-03-04^[25].