[{"url":"https://duckduckgo.com/Undefined_(mathematics)","title":"Undefined (mathematics) In mathematics, undefined has several different meanings, depending on the context..."},{"url":"https://duckduckgo.com/Indeterminate_form","title":"Indeterminate form In calculus and other branches of mathematical analysis, limits involving an algebraic..."},{"url":"https://duckduckgo.com/Undefined_behavior","title":"Undefined behavior A computer program exhibits undefined behavior when it contains, or is executing code for which..."},{"url":"https://duckduckgo.com/Undefined_value","title":"Undefined value A condition where an expression in a programming language does not have a semantically correct..."},{"url":"https://duckduckgo.com/Undefined_variable","title":"Undefined variable A variable that is accessed in the code but has not been declared by that code."},{"url":"https://duckduckgo.com/Estonian_nationality_law","title":"Undefined citizenship A citizen of Estonia."},{"url":"https://duckduckgo.com/d/Null","title":"Null See related meanings for the word 'Null'."},{"url":"https://duckduckgo.com/d/Void","title":"Void See related meanings for the word 'Void'."},{"url":"https://duckduckgo.com/d/Invalid","title":"Invalid See related meanings for the word 'Invalid'."},{"url":"https://duckduckgo.com/d/Definition","title":"Definition See related meanings for the word 'Definition'."},{"url":"https://duckduckgo.com/d/Definable","title":"Definable See related meanings for the word 'Definable'."}]