| − | The term "elementary proof" or "elementary techniques" in mathematics means use of only [[real numbers]] or real analysis rather than the use of complex analysis.<ref>http://mathworld.wolfram.com/ElementaryProof.html</ref> | + | The term "elementary proof" or "elementary techniques" in mathematics means [[proof | proofs]] that use only [[real numbers]] or real analysis rather than the use of complex analysis.<ref>http://mathworld.wolfram.com/ElementaryProof.html</ref> |