Математички доказ: Разлика помеѓу преработките

[[File:Oxyrhynchus papyrus with Euclid's Elements.jpg|right|thumb|250px|Најстариот зачуван фрагмент од „Елементи“ на [[Евклид]].<ref>{{citeНаведена webмрежна страница

Доказот е нужен, неизбежен, составен дел на секое математичко тврдење (како што се: [[Теорема|теоремите]] и [[Лема|лемите]]), со исклучок на [[Аксиома|аксиомите]].<ref>{{citeНаведена bookкнига |author1=Clapham, C. |author2=Nicholson, JN. |lastauthoramp=yes | title = The Concise Oxford Dictionary of Mathematics, Fourth edition |quote = A statement whose truth is either to be taken as self-evident or to be assumed. Certain areas of mathematics involve choosing a set of axioms and discovering what results can be derived from them, providing proofs for the theorems that are obtained.}}</ref><ref name="nutsandbolts">{{citeНаведена bookкнига|title=The Nuts and Bolts of Proofs: An Introduction to Mathematical Proofs |last=Cupillari |first=Antonella |edition=Third |year=2005 |orig-year=2001 |publisher=[[Academic Press]] |isbn=978-0-12-088509-1 |page=3}}</ref><ref>{{citeНаведена bookкнига|title=Discrete Mathematics with Proof |date=July 2009 |first=Eric |last=Gossett |page=86 |quote=Definition 3.1. Proof: An Informal Definition |publisher=[[Wiley (publisher)|John Wiley & Sons]] |isbn=978-0470457931}}</ref>