In mathematics, an R-function, or Rvachev function, is a real-valued function whose sign does not change if none of the signs of its arguments change;...

intervals within which this function is positive or negative follows the same pattern as the Thue–Morse sequence. The Rvachëv up function is closely related:...

engineering scientist. Rvachov, the son of a teacher Logvin Fedorovich Rvachev, began studying at the Kharkiv Polytechnic Institute in 1943, but the occupation...

real-valued functions as output, thus guaranteeing the closure property of the representation. R-functions originally introduced in V.L. Rvachev's "On the...

1\end{cases}}} with F ( t ) {\displaystyle F(t)} the Fabius function, known as Rvachëv up function. Dynamics of diabetes Epidemiology Population dynamics Classical...