Definitions by Numerati

π% Interest

The return a brokerage house promises to potential customers on their idle cash if they open an account within 314 days of the offer date.

An obscene number of math geeks eagerly signed up for accounts with the brokerage that offered them π% interest on their uninvested cash.

π% Interest by Numerati June 1, 2026

Singmaths

Also known as “Singapore Maths.” The mathematical equivalent of Singlish (or Singapore English). It refers to the distinctive way local math teachers, tutors, and parents speak to their children when discussing school mathematics.

Singmaths, a bastardized form of British Maths, serves as the lingua franca in “fine” Singapore. It is especially common among expatriates who want to bond with locals while complaining about the dreaded PSLE math exam and the country’s enviable rankings in PISA and TIMSS.

Singmaths by Numerati May 30, 2026

Pitopia

A secret place on Earth where different typefaces of π meet to update each other on their latest typographical concerns since the last gathering.

At Pitopia, it’s impossible not to meet the prettiest and ugliest types of the Pi community.

Pitopia by Numerati March 23, 2026

Pi-Million-Dollar Shop

A billionaires’ beloved geek venue that promotes pi-related luxuries, with a few $π-million collectibles selling at π% discount on Pi Day.

Except on some math special days, everything in Yan’s Pi-Million-Dollar Shop is at least pi million dollars—zero bargains galore!

Pi-Million-Dollar Shop by Numerati March 21, 2026

Pi Machine

An automatic tattoo machine found in some posh shopping malls, which has been engineered for demanding geeks who have little faith in an often-error-prone, math-anxious tattooist in accurately designing the number π.

After inputting the typeface and size of the tattoo into the pi machine, Jack waits anxiously, yet excitedly, for his body art.

Pi Machine by Numerati March 17, 2026

Quantum Pi

Physicists and mathematicians remain divided: is the transcendental, “real” π truly real, or simultaneously unreal—a human invention, a mere psychic illusion that binds the constant both within and beyond the mind?

Does quantum pi disrupt—or even distort—an observer’s understanding of it?

Quantum Pi by Numerati March 16, 2026

The Calendarization of Singapore Math

When Grades 1–6 math questions from the “fine” city of Singapore are creatively or subtly presented on a printed, friendly, colorful calendar rather than through traditional channels like boring textbooks and workbooks, a change of platform often works wonders for math-anxious kids and their parents.

Social media and e-learning platforms are often hyped by publishing houses to market their math products, whereas the calendarization of Singapore Math could be a more effective and cheaper vehicle for raising numeracy in the general public.

The Calendarization of Singapore Math by Numerati March 14, 2026