m Kord . = .•. w£K:aî,2/s^*'^*^ = 2/'^^SMy^2/Sw«^î

ce S« y . y'S^ X . =-0;, yA:x,yjZs,u.xSuy.y S„0 . Ox-,y, ;? . a? S«. ^ .

Def.

8. w , ^? s Kord .o::fz[v ford u) . = .-.fz {v ïu) sim :x ,yzu .x^^y .

o.fxSvfy. Def.

9. tA s K bord . = :•: w £ Kord .a?£(£C£î^:y£î^.î/SMa!;. =^y a) - == a ::

ce £ i^.Oo; .'. ^ £ w . a? S„ y . s £ (jsr £ w.a? S^, 2?.2? S^ 2/) == ^ : -=y a . Def.

10. UyVzK bord .o: Ntrasf ^w=Ntrasf ^t; .==/"£ {v ford t*) . - =/• a . Def.

11. Ntrasf = ce £ (w £ K bord . ce = Ntrasf ^w . - =^ a) . Def.