21. In superstring theory, a mathematical relationship called T duality suggests that one can shrink a circle only so far. 22. The mathematical relationships used to describe the flow of water through porous media are the elastic and heat conduction analogies. 23. While there he reportedly met a German professor who helped him recognize the mathematical relationship to curve shapes and identity. 24. In the realm of other disciplines, this created a pressure to express ideas in the form of mathematical relationships . 25. Many star polyhedra are of this type ( although star polyhedra and star domains have no formal mathematical relationship ). 26. Meta-modeling or Surrogate model is a process to win the mathematical relationship between design parameters and product characteristics. 27. Dirac's attention was drawn to a mysterious mathematical relationship , at first sight unintelligible, that Heisenberg had reached. 28. There are very specific practical, mathematical relationships that enable one to describe and control the performance of flows and stocks. 29. No mathematical relationship applies to the networks of chaotic systems that make up the human mind-so extrapolation is impossible. 30. By the Middle Ages, many people believed that mathematical relationships , being perfect, reflected the divine order of the universe.
