Proof Pearl: Bounding Least Common Multiples with Triangles

Date

2017

Authors

Chan, Hing Lun Joseph
Norrish, Michael

Journal Title

Journal ISSN

Volume Title

Publisher

Kluwer Academic Publishers

Abstract

We present a proof of the fact that Open image in new window for \(n \ge 0\). This result has a standard proof via an integral, but our proof is purely number-theoretic, requiring little more than inductions based on lists. The almost-pictorial proof is based on manipulations of a variant of Leibniz’s harmonic triangle, itself a relative of Pascal’s better-known Triangle.

Description

Keywords

Least common multiple, Pascal’s triangle, Leibniz’s triangle, Formalisation, Automated theorem proving, HOL4, Binomial coefficients

Citation

Source

Journal of Automated Reasoning

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

Restricted until

2099-12-31