41. In increment operator and two minus signs a decrement. 42. The minus sign is there as the derivative has to pass through the first Grassmann variable. 43. If the value is negative then the minus sign is the leftmost digit of this row. 44. We did not learn arithmetic by directly using symbols of numbers or plus and minus signs . 45. They rang down the curtain on Belmont's spring and summer season Wednesday with more minus signs . 46. Where the plus sign indicates right circular polarization and the minus sign indicates left circular polarization. 47. Plus and minus signs mean nothing to him. 48. It effectively says that a minus sign is picked up whenever two odd elements are interchanged. 49. Where the plus sign indicates left circular polarization and the minus sign indicates right circular polarization. 50. Introduction of a minus sign can indicate that an increment of frequency corresponds with decrement of wavelength.
