Why is the number 1729 on the poster?

It is the taxicab number of the well-known story about Ramanujan, and the smallest number that is a sum of two cubes in two different ways. The taxi shows both sums, 1 cubed plus 12 cubed, and 9 cubed plus 10 cubed.

How do the three styles differ?

Chalkboard is chalk on a dark green board, flat vector uses clean shapes on graph-paper colour, and poster paint looks like a hand-painted school chart.

Are these photographs?

No. Each one is a drawn illustration.

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/mathematics-day-posters · faith

National Mathematics Day posters: Ramanujan, the number 1729, the symbols of mathematics

National Mathematics Day posters — a respectful illustrated portrait of Srinivasa Ramanujan in a dark coat with a tilak on his forehead, equations floating around him, "National Mathematics Day" lettered above, chalk art on a classroom blackboard, flat chalk shapes with soft dusty edges and neat chalk lettering

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every sample — three subjects, three styles ↓

Reading 1Ramanujan

Reading 2Number 1729

Reading 3Maths symbols

Posters for National Mathematics Day on 22 December, the birth anniversary of Srinivasa Ramanujan. They suit a school maths club, a classroom wall or a poster competition. The three readings are a respectful portrait of Ramanujan with equations around him, a yellow taxi marked 1729 with two sums written beside it, and a large pi sign with an infinity loop, a compass and a protractor. Type a twist, such as golden ratio, to ask for a version of it.

a school maths club poster
a classroom maths wall
a poster competition entry
a chalkboard-style board for a maths lesson

Frequently asked questions

Why is the number 1729 on the poster?: It is the taxicab number of the well-known story about Ramanujan, and the smallest number that is a sum of two cubes in two different ways. The taxi shows both sums, 1 cubed plus 12 cubed, and 9 cubed plus 10 cubed.
What date is National Mathematics Day?: 22 December, the birth anniversary of Srinivasa Ramanujan.
How do the three styles differ?: Chalkboard is chalk on a dark green board, flat vector uses clean shapes on graph-paper colour, and poster paint looks like a hand-painted school chart.
Are these photographs?: No. Each one is a drawn illustration.

About toile

This page is a showcase and a starting point: nine samples already rendered, three readings of the pack crossed with three styles, each shown at the size and ratio it was made for. Take any of them further on the wall with a few words, or ask for all nine again under your own direction; a sign-in keeps what you make, and it is free while Toile is new. The recipe behind each sample — the subject, the style, the palette, the framing — travels with the image rather than staying private to the render: it is in the alt text of every sample and in the page's own structured data, so a search engine reads the same handles a person would.