B L

graduate with a bachelor's degree in law

The degree of Bachelor of Laws is the principal academic degree in law in the majority of common law countries other than the United States, where it has been replaced by the Juris Doctor degree.It is abbreviated LL.B. (or LLB): "LL." is an abbreviation of the genitive plural legum (of lex, law), thus "LL.B." stands for Legum Baccalaureus in Latin. In the United States it is sometimes erroneously called "Bachelor of Legal Letters" to account for the double "L".Historically, in Canada, Bachelor of Laws is the name of the first degree in common law, but is also the name of the first degree in Quebec civil law awarded by a number of Quebec universities. The Canadian common law LL.B. is generally a graduate-entry degree, meaning that the majority of those admitted to a Canadian LL.B. programme are already holders of one or more degrees.
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In high energy physics, B−L (pronounced "bee minus ell") is the baryon number minus the lepton number. This quantum number is the charge of a global/gauge U(1) symmetry in some GUT models, called U(1)B−L. Unlike baryon number alone or lepton number alone, this hypothetical symmetry is not broken by chiral anomalies or gravitational anomalies, as long as this symmetry is global, which is why this symmetry is often invoked. If B−L exists as a symmetry, it has to be spontaneously broken to give the neutrinos a nonzero mass if we assume the seesaw mechanism.
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