The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number ...

A linear equation is drawn as a straight line on a set of axes. To draw the graph we need coordinates. We generate these coordinates by substituting values into the linear equation. STEP 1 - Draw a ...

NRA contribution data is from the 1998 through 2018 Congressional cycles and does not include individual expenditures or communication costs.

You can’t tell the difference. Looking south while sitting on Township Road 10, a grid road running along the 49th Parallel dividing Canada and the United States, you can’t tell the difference between ...

Try an experiment. Next time you are in a room with someone, ask them to name everything in the room. Only certain kinds of people will say “air” or “light.” For most people, those are just givens, ...

Abstract: Finding the isomorphic graph is the problem that have algorithms with the complexity time. For this in general, because of classification for algorithms time complexity, this solution stay ...

Abstract: The problem of finding a minimum-weight connected dominating set (CDS) of a given undirected graph has been studied actively, motivated by operations of wireless ad hoc networks. In this ...

This book outlines the modern theory of functional equations and inequalities in several variables. It consists of three parts. The first is devoted to additive and convex functions defined on linear ...

This volume is an introductory level textbook for partial differential equations (PDE's) and suitable for a one-semester undergraduate level or two-semester graduate level course in PDE's or applied ...