# bx

bx. box

### BX

Base Exchange

## BX

abbreviation

Base Exchange

### bx.

abbreviation

box

- It may be written in the form n n-1 2 ax 1 +bx1 x2 +cx 1 x 2 + ...; or in the form n n n=1 n n-2 2 +(1)
**bx**x2+ ? - May be a simultaneous invariant of a number of different forms az',
**bx**2, cx 3, ..., where n1, n 2, n3, ... - (ab)(ac)
**bxcx**= - (ab)(bc)axcx = 2(ab)c x {(ac)**bx**-(bc)axi = 1(ab)2ci; so that the covariant of the quadratic on the left is half the product of the quadratic itself and its only invariant. - - We have seen that (ab) is a simultaneous invariant of the two different linear forms a x,
**bx**, and we observe that (ab) is equivalent to where f =a x, 4)=b. - The two forms ax,
**bx**, or of, 0, may be identical; we then have the kth transvectant of a form over itself which may, or may not, vanish identically; and, in the latter case, is a covariant of the single form.

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