EntityQ1422068· pop 15· linked from 62 articlesfixed-point theoremSign in to saveone of several theorems stating that, under certain conditions, a function f will have an argument x for which f(x) = xConnectionsNielsen theoryEntitymathematicsEntityInternational Standard Book NumberEntityset theoryEntityfunctionEntitydigital object identifierEntityparityEntitycontinuous functionEntityEuclidean spaceEntitypartial differential equationEntityalgebraic topologyEntityfinite setEntitylambda calculusEntityordinal numberEntitymonotonic functionEntitycomputability theoryEntityiterationEntityfirst-order logicEntityfixed pointEntityChurch–Turing thesisEntityCategoriesClosure operatorsFixed-point theoremsIterative methods