In many scientific fields, sparseness and indirectness of empirical evidence pose fundamental challenges to theory development. Theories of the evolution o
It gives for each of 161 cul.,ic number fields the class number, h, the discriminant t:,, a basis, and the factori sa- tion of certain rational primes into their prime ideal factors. The method is founded upon a theorem of Minkow~ki"s. In every ideal class there is an ideal, j,...
0.5 t-value > 1.96 0.90 (29.60) 0.90 (29.03) 0.91 (30.26) 0.88 (28.02) 0.85 (26.37) 0.75 (22.10) 0.73 (20.82) 0.89 (28.73) 0.93 (23.69) 0.94 (20.83) 0.82 (29.93) 0.74 (30.61) CRC > 0.7 AVE > 0.5 0.94 0.83 0.88 0.73 0.80 0.93 0.66 0.87 0.76 0.61 Table 4 Discriminant validity...