31. The Arnoldi iteration reduces to the Lanczos iteration for symmetric matrices . 32. Conference matrices first arose in connection with a problem in telephony. 33. This relation gives a bijection between involutory matrices and idempotent matrices. 34. This relation gives a bijection between involutory matrices and idempotent matrices . 35. Glucans from carbohydrate chromatography matrices can also lead to false positives. 36. These covariance matrices are computed by inverting the obtained information matrices. 37. These covariance matrices are computed by inverting the obtained information matrices . 38. For non-square matrices , the algorithms are more complicated. 39. The second-moment matrices are related in the following manner: 40. Early encryption techniques such as the Hill cipher also used matrices .
