Identity function (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Identity function" in English language version.

refsWebsite

Global rank English rank

3^rd place

2^nd place

books.google.com (Global: 3^rd place; English: 3^rd place)

Proceedings of Symposia in Pure Mathematics. American Mathematical Society. 1974. p. 92. ISBN 978-0-8218-1425-3. ...then the diagonal set determined by M is the identity relation...
Nel, Louis (2016). Continuity Theory. Cham: Springer. p. 21. doi:10.1007/978-3-319-31159-3. ISBN 978-3-319-31159-3.
Rosales, J. C.; García-Sánchez, P. A. (1999). Finitely Generated Commutative Monoids. Nova Publishers. p. 1. ISBN 978-1-56072-670-8. The element 0 is usually referred to as the identity element and if it exists, it is unique
T. S. Shores (2007). Applied Linear Algebra and Matrix Analysis. Undergraduate Texts in Mathematics. Springer. ISBN 978-038-733-195-9.
Conover, Robert A. (2014-05-21). A First Course in Topology: An Introduction to Mathematical Thinking. Courier Corporation. p. 65. ISBN 978-0-486-78001-6.
Conferences, University of Michigan Engineering Summer (1968). Foundations of Information Systems Engineering. we see that an identity element of a semigroup is idempotent.