Abstract: Partition functions and graph polynomials have found many applications in combinatorics, physics, biology and even the mathematics of finance. Studying their complexity poses some problems.
Gold medallist Norway's Tormod Frostad and silver medallist Mac Forehand celebrate after the men's freestyle skiing big air finals at the 2026 Winter Olympics. Photo: AP Norway's remarkable ...
Build flexible Excel functions that automatically handle blanks, defaults, and overrides without messy nested IFs.
👉 Learn how to graph piecewise functions. A piecewise function is a function which has more than one sub-function for different sub-intervals (sub-domains) of the function's domain. To graph a ...