In this article we present definitions, basic properties and some examples of periodic functions according to [5].
@article{bwmeta1.element.doi-10_2478_v10037-009-0031-9, author = {Bo Li and Dailu Li and Yanhong Men and Xiquan Liang}, title = {Basic Properties of Periodic Functions}, journal = {Formalized Mathematics}, volume = {17}, year = {2009}, pages = {245-248}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.doi-10_2478_v10037-009-0031-9} }
Bo Li; Dailu Li; Yanhong Men; Xiquan Liang. Basic Properties of Periodic Functions. Formalized Mathematics, Tome 17 (2009) pp. 245-248. http://gdmltest.u-ga.fr/item/bwmeta1.element.doi-10_2478_v10037-009-0031-9/
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