21. For the zeroth law, one considers operations of thermally connecting and disconnecting systems. 22. If also required, the zeroth quartile is 3 and the fourth quartile is 20. 23. Hence it was numbered the zeroth law. 24. The solution of the zeroth -order MP equation is the sum of orbital energies. 25. Nevertheless, the zeroth law of thermodynamics says that they all measure the same quality. 26. Default is " zero " for cardinal numbers, " zeroth " for ordinal numbers. 27. For example, reaction involving solids ( or solid catalysts ) are generally zeroth order. 28. Here ( i . e . the zeroth -order derivative of a is just ). 29. There are unique 5 degrees of rectifications including the zeroth , the 10-simplex itself. 30. A zeroth -order approximation of a line with no slope : a polynomial of degree 0.