21. In differential geometry, the "'lidinoid "'is a triply periodic minimal surface. 22. Unlike Peano arithmetic, Skolem arithmetic is a computational complexity of this decision problem is triply exponential, however. 23. In common with his subject, Callow is triply talented, in his case as author, actor and director. 24. The Tradition worships a triply aspected Goddess and various forms of the God derived from ancient Greek and British mythology. 25. Even small, triply charged anions can be redirected to the cathode by the relatively powerful EOF of the buffer solution. 26. Ideal triangles are also sometimes called " triply asymptotic triangles " or " trebly asymptotic triangles ". 27. They were later named by Alan Schoen in his seminal report that described the gyroid and other triply periodic minimal surfaces. 28. Triply without a country, he was born in Trinidad of Hindu parents and has lived for half a century in England.29. A "'gyroid "'is an infinitely connected triply periodic minimal surface discovered by Alan Schoen in 1970. 30. Afterwards, the company's strategic development director, Purificacion Carpinteyro, said, " We are triply satisfied ."