About Delta Xi / δξ
Some ideas stay with you.
You might as well wear them.

From the founder
Ideas from the work I do.
Most of my work is in quantitative finance, software engineering and topological deep learning. Delta Xi brings some of those ideas into clothes and everyday objects.
I build the storefront as well as the brand. Outside Delta Xi, my projects include software products, decentralised finance and tools for developers. You can see that work at rafaelaslanian.com.
I'm based in London. Music is part of my life too: singing, guitar and piano, with bossa nova, MPB and jazz always close by.
The name δξ comes from stochastic differentials: an infinitesimal change in a random variable.
How it's made
Designed here.
Made when you order.
Our production partner prints or embroiders each design and ships the finished piece. Making items to order means we don't need a warehouse of every design, colour and size.
Our current tees use Bella + Canvas 3001. Solid colours are combed and ring-spun cotton; heather colours can contain polyester. Check the details for the colour you choose.
Production and shipping take time. Read the delivery estimates and return terms before ordering, and use the size guide to compare with a shirt you already own.
Shipping & returnsKeep looking
Find an idea that feels like you.
Browse the collection, or explore the concepts in Learn.