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# Title: Leibniz-Handschriften zur Philosophie LH 4, 7B, 4
# Folio 26r, page id 00068648:0051
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+
Ut Syllogismus est  actus mentis, quo per
prae subjecto per medium ipsi inclusum vel exclusum
cognoscitur medium, colligitur. praedicatum hunc inclusum
vel applusum, etiam illi inclusum vel exclusum
esse.
duabus autem res constat regulis
Medium subjecto inclusum, etiam praedicatum
sibi inclusum (vel exclusum,) ei includi(vel excludimel
+AB= CB. _. BC, A AB a AC ABCAAB _AB
ex de ostendit BC: AB. AC per aaa, eacimat, eao. hins qua
tac, et eao couectendo simpliciter fit XcBAB. C(vel 0) AC, nam C. BC sequitur ex eCB
praeru
Medium subjecto exclusum etiam praecicatum
a CB, e. AB,   (vel 0) AC. Ergo a. CB, e. BA evet 0) Ac. n pi  modus segeh
se includens subjecto ercludi ostendit
taec pertinent ad propositiones universales
est demotudenta. univers alisereffirmato
nam includi est re sin affirman, et
estde excludente
universalis nnhant sed
excludo est ad omni resioberi.
e et hinc particulaream usus colligitur
sequiur
vet
quia particularis affirmativa est negatro
qua et particularis,
lexclusionis; et particularis negus liva e
itaque concapositione uti dicet
negatio daclusionis. It si mode pracitalum
i diet enctadi vegus, subine modicetum
G
inc itaque contrapositione regulae prime, si
affirmativa convertitur
cexaude
praedicatum
ex uadis alterutrum sequibur
n
nogis momu
medium subjecto non incladi, vel praedicatum
m
agdeis
len
catum. Aisubjerdam et praediatum hesesin
u
simplic iter, seu natfirmeqve
neges A enitutere nedio non includi (excl
B, etiam masor et si cubje toneget includiieulum
negas B: sexcludiprdicat affirmes autem medium
exnodare
variatur contrapo subjecto includi u praedgitum medo
minter e enpludi
s
e
cudere A, Etium
setio. t et sif
exclud
traedicatum etq medluma
eati.
redicato.
cudi) pradicatum
Rursus sam si subjedo neves includides inter se excludis
praedieatu, n
affirmes autem praedicatum medio includi (excludi
ee subjectum e
negare debes medium subjecto includi.
secutdse nam
similiter duplex est contrapositio regula 
secda.
subjettum et praeciatum
Atem si patedica subjecto negestmu
excludi praedictum, affirmes autem subjecto
s 1
per regussum
binas ey qua
vis fient 
ad hac 20. ita 30.
sed revera sorum
 14. Ergo 4,
bis ocurent
torte
lalis
eim
si addas
negat con
clusionem et ad
missamraxi
mistarum in regulis
unversali