Vehicle registration plates of Bulgaria Vehicle registration plates of Bulgaria Standard Bulgarian vehicle registration plates display black glyphs (alphanumeric characters) on a white background, together with – on the left-hand side of the plate – a blue vertical "EU strip" showing the flag of Europe (or, for older-registered cars, the flag of Bulgaria) and, below it, the country code for Bulgaria: BG. The characters displayed in the main field of the plate are: The format is thus XX NNNN YY, where XX (or X) is the province code, NNNN is the serial number, and YY is the series. Since 1992, only glyphs that are common
AF+BG theorem the greatest common divisor of "f" and "g". The AF+BG condition expresses, in terms of divisors (sets of points, with multiplicities), a similar condition under which a homogeneous polynomial "H" in three variables can be written as an element of the ideal generated by two other polynomials "F" and "G". This theorem is also a refinement, for this particular case, of Hilbert's Nullstellensatz, which provides a condition expressing that some power of a polynomial "h" (in any number of variables) belongs to the ideal generated by a finite set of polynomials. AF+BG theorem In algebraic geometry, a field of mathematics,