Editing Pre-intuitionism (section)

==The introduction of natural numbers==
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The pre-intuitionists, as defined by [[L. E. J. Brouwer]], differed from the [[Formalism (philosophy of mathematics)|formalist]] standpoint in several ways,<ref name=CW/> particularly in regard to the introduction of natural numbers, or how the natural numbers are defined/denoted. For [[Henri Poincaré|Poincaré]], the definition of a mathematical entity is the construction of the entity itself and not an expression of an underlying essence or existence.

This is to say that no mathematical object exists without human construction of it, both in mind and language.