

The Aperiodical
Christian Perfect, Peter Rowlett and Katie Steckles
Occasional(ly) mathematical blogging
Episodes
Mentioned books

Dec 19, 2025 • 19min
Mathematical Objects: Slice of pizza
A conversation about mathematics inspired by a slice of pizza. Presented by Katie Steckles and Peter Rowlett.

Dec 5, 2025 • 42min
Mathematical Objects: Cardioid with Dominika Vasilkova
A conversation about mathematics inspired by a light pattern in a tea cup. Presented by Katie Steckles and Peter Rowlett, with special guest Dominika Vasilkova.
Cardioids in coffee cups – Chalkdust
Cardioids in Coffee Cups – Numberphile
‘Stringuart’ String Art website (and less commercial String Art Generator)

Nov 21, 2025 • 34min
Mathematical Objects: Roman dodecahedron
A conversation about mathematics, history, games and more, inspired by a Roman dodecahedron. Presented by Katie Steckles and Peter Rowlett.

Nov 7, 2025 • 29min
Mathematical Objects: 3D wooden puzzle with Grant Sanderson
A conversation about mathematics inspired by a 3D wooden puzzle. Presented by Katie Steckles and Peter Rowlett, with special guest Grant Sanderson.

Dec 20, 2024 • 22min
Mathematical Objects: Universe of cake
A conversation about mathematics inspired by Lewis Carroll’s Game of Logic. Presented by Katie Steckles and Peter Rowlett.

Dec 6, 2024 • 22min
Mathematical Objects: An object with Tai-Danae Bradley
Tai-Danae Bradley, an expert in category theory and creator of the blog Mathema, joins the discussion to explore the significance of 'objects' in mathematics. They dive into category theory, using engaging examples like the Rubik's Cube to illustrate relationships between mathematical entities. The conversation highlights the composability of functions, the links between algebra and topology, and the beautiful connections between mathematics and reality, showcasing how abstract concepts find practical applications in the world.

Nov 22, 2024 • 15min
Mathematical Objects: Borges’ Library of Babel
A conversation about infinity inspired by The Library of Babel by Jorge Luis Borges. Presented by Katie Steckles and Peter Rowlett.

Nov 8, 2024 • 33min
Mathematical Objects: Parallelepiped with Ayliean MacDonald
A conversation about mathematics inspired by a very special parallelepiped. Presented by Katie Steckles and Peter Rowlett, with special guest Ayliean.

Oct 25, 2024 • 30min
Mathematical Objects: An area the size of Wales
A conversation about mathematics inspired by an area the size of Wales. Presented by Katie Steckles and Peter Rowlett.

Oct 11, 2024 • 39min
Mathematical Objects: A ballot with Sam Hansen
A conversation about election mathematics inspired by a ballot. Presented by Katie Steckles and Peter Rowlett, with special guest Sam Hansen.
For more from Sam and the Carry the Two podcast check out this episode about Mathematics and Voting.


