# Harmonische Raume und ihre Potentialtheorie by Bauer.

By Bauer.

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Z Apply (gL) as a rewrite rule Z before ordinary demodulation. Z Paramodulate from the given clause. set(para_from). Z Paramodulate into the given clause. set(para_into). set(para_from_vars). Z Allow paramodulation into variables. Z Allow paramodulation from variables. set(para_into_vars). set(order_eq). Z Orient equalities. set(back_demod). Z Apply back demodulation. Z Process input clauses as if derived. set(process_input). Z Orient equalities with LRPO procedure. set(Irpo). ZZZZZZZZZZZZZZZZZZZZZ Standard o p t i o n s f o r h y p e r r e s o l u t i o n set(output_sequent).

Now, f ( x , y, a) = (F(a, x ) . e). F(a, y) = (F(a, e). F(a, [since F(a, = F(a, y)] = e [since ( u - e ) . u = e] f ( x , y, a) = e [Vx, y e C] Thus we have and hence, f ( x , y, z) = f ( u , v, z) = f(e, e, z) = [by rigidity] [letting v = u = e] (F(z, e). e). F(z, e) e. In other words, (F(z, x) . e) . F ( z , x) = ( F ( z , x) 9 e) 9 F ( z , y) and thus, after one left cancellation, we get the desired equality F ( z , x) = F ( z , y) for all x, y, and z. D. Let us illustrate this deduction procedure with a typical example.

X. e). (y. e) = ( x . y ) . e [3 -+ 2] [3 ~ 11:4,4, flip] ( e . x ) . e = e. (x. e) ((e. x ) - ~ ) - ( e - z ) = (e. (x. e)). (y. z) (x. (~. z)). ((~. v). w) = (x. (u. z)). 3 Abelian [2 -+ 2] Groups We start with the elementary theorem that groups satisfying (gL) are commutative. Theorem ABGT-1. (gL)-groups are Abelian. xe~x x'x = e =(gL)=> {xy = yx}. 36 seconds). xl~---e 6 (x. y ) . ~ = ~. (~. e (x. e ) ' . x = e ao (e. x)'. 3 Abelian Groups 48,47 56,55 85,84 102,101 103 104 106,105 112,111 116,115 119,118 120 137,136 140 144 155 156 (e-e)' = e x- (x.