[ab]
[aa]
[ac]
[aa]
[aa]
0
0
1
[ac] n [ad]
[aa] ^oc [aa] Wcc [aa]
Qac W Qbc
Qcd
0
Qcc ~t~
1
[cc.2]
100
2e stel.
[aa] Qab [ab] Qbb [ac] Qbc [ad] Qbd 0
[ab] Qab [bb] Qbb [bb] Qbc [bd] Qbd 1
[ac] Qab [be] Qbb [cc] Qbc [cd] Qbd 0
[ad] Qab [bd] Qbb [cd] Qbc [dd] Qbd 0
3e stel.
[aa] Qac [ab] Qbc [ac] QCc [ad] Qcd 0
[ab] Qac [bb] Qbc [be] Qcc [bd] Qcd 0
[ac] Qac [be] Qbc [cc] Qcc [cd] Qcd 1
[ad] Qac [bd] Qbc [cd] Qcc [dd] Qcd 0
4e stel.
[aa] Qad [ab] Qbd [ac] Qcd [ad] Qdd 0
[ab] Qad [bb] Qbd [be] Qcd [bd] Qdd 0
[ac] Qad [be] Qbd [cc] Qcd [cd] Qdd 0
[ad] Qad [bd] Qbd [cd] Qcd [dd] Qdd 1
De reductie (volgens Gauss) van het 4e stel gewichtsver
gelijkingen levert:
Qad
Qbd
Qbd
[be. 1]
[bb. I
Qcd
Qcd
[ad] O
r—Qdd
4. [bd",] O
r. Qdd
Qcd
[bb.l]
[cd.2]
[cc.2]
Qdd
Qdd
[dd.3]
Het 3e stel gereduceerd geeft (met weglating van de
laatste gewichtsvergelijking):
n, [bc.l n [bd.l] n
Qbc HXTi Qcc "T rüïTTi Qcd 0
[bb.l]
[bb.l]
[cd.2]
[cc.2]
Qcd
