This shirt features the official logo of Pi Lovers: a visual expression of mathematical harmony and meaning. At the core is a cardioid, formed as the envelope of lines reflected inside a circle. This curve arises from the family of rays tangent to a moving point along the circle’s boundary, a classic envelope construction in polar geometry.

The surrounding circle represents Pi, the constant that defines its shape, while the inner cardioid (heart-like in form) stands for Lovers. Together, they represent our passion for the beauty of mathematics and its ability to create unexpected patterns from pure logic.

Perfect for those who admire curves not just for their form, but for the ideas they carry. 

• Soft and smooth combed cotton
• Lightweight and breathable fabric (142 g/m²)
• Pre-shrunk for consistent fit
• Side-seamed with reinforced shoulders for durability

Each item is printed on demand in order to minimize waste and maximize meaning. 
Thanks for supporting thoughtful, math-driven design.

Age restrictions: For adults
EU Warranty: 2 years

In compliance with the General Product Safety Regulation (GPSR), Oak inc. and SINDEN VENTURES LIMITED ensure that all consumer products offered are safe and meet EU standards. For any product safety related inquiries or concerns, please contact our EU representative at gpsr@sindenventures.com. You can also write to us at 123 Main Street, Anytown, Country or Markou Evgenikou 11, Mesa Geitonia, 4002, Limassol, Cyprus.