# Breather Pseudosphere

The Breather Pseudosphere corresponds to a solution to the sine–Gordon Equation. The term Breather originates from the characteristic of breather surfaces to oscillate (breathe) in time.

While a common sphere has a constant positive curvature, the Breather Pseudosphere has a constant curvature. The surface is produced using the following function:
$% f(u,v) = 4\arctan \left( \frac{b}{\sqrt{1-b^2}} \frac{\sin\sqrt{1-b^2}v}{\cosh(b~u)}\right)%$ where $$u$$ and $$v$$ are asymptotic coordinates.

## Production details

All prints are produced on a inkjet printer on Innova’s IFA-22 paper:

• 315 g/m2
• Soft textured
• 100% cotton
• Natural white
• Acid and lignin free

Prints are currently only available in the DIN A4 format. If you are interested in other formats, please let me know.

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