31. The statements assume a factual rather than theoretical basis , 32. The underlying theoretical basis of workflow management is the mathematical concept of a Petri net. 33. This was the origin of FitzGerald Lorentz contraction, and their hypothesis had no theoretical basis . 34. Kasym laid out the theoretical basis for Kyrgyz grammar. 35. The theoretical basis was controversial in many ways. 36. Mariana and the Spanish scholastics provided much of the theoretical basis for Austrian School economic thought. 37. Each of the terms in this formula has a theoretical basis , as will be explained below. 38. :: The alternative is something which is strictly observed thru experimentation, but has no theoretical basis . 39. Statistical activities are often associated with models expressed using theoretical basis : see History of probability. 40. This was also the theoretical basis for Likhachyov s attention to ancient monuments, especially in architecture.