In mathematics, infinity plus one is a concept which has a well-defined formal meaning in some number systems, and may refer to:

• infinityplusone, New Zealand maths teacher and YouTuber
• Transfinite numbers, numbers that are larger than all the finite numbers.
  • Cardinal numbers, representations of sizes (cardinalities) of abstract sets, which may be infinite.
  • Ordinal numbers, representations of order types of well-ordered sets, which may also be infinite.
• Hyperreal numbers, an extension of the real number system that contains infinite and infinitesimal numbers.
• Surreal numbers, another extension of the real numbers, contain the hyperreal and all the transfinite ordinal numbers.

This disambiguation page lists articles associated with the title Infinity plus one.
If an internal link led you here, you may wish to change the link to point directly to the intended article.