Rebecca Lake is a certified educator in personal finance (CEPF) and a banking expert. She's been writing about personal finance since 2014, and her work has appeared in numerous publications online.

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Recent progress on the “sum product” problem recalls a celebrated mathematical result that revealed the power of miniature number systems. It’s one thing to turn a cartwheel in an open field. It’s ...

The p-adics form an infinite collection of number systems based on prime numbers. They’re at the heart of modern number theory. The rational numbers are the most familiar numbers: 1, -5, ½, and every ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Mira Norian / Investopedia A bank identification number (BIN) is the initial set of four to ...

In primates, number neurons in a dedicated parieto-frontal network encode the number of elements in a stimulus. Number neurons in the prefrontal cortex respond in an abstract manner, and their ...