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# Title: Leibniz-Handschriften zur Mathematik LH 35, 4, 13
# Folio 30r, page id 00068010:0059
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Numerorum Characteres simplices
vel sant in Arithmetica vel in Algebra. in Arithmetica
 maxime usitati sunt ver
0. 1. 2. 3. 4. 5, 6. 7. 8. 9. in literis a. b c.
ita 0 significat nihil. 1. unitatem
et 2  significat 1 et 1. et 3
signifiiat 2 plus 1. et 4 sign. 3 plus 1.
et ita porro. In lieris autem
etsi a sit simplex, tamen per
eam litenam intelligi potest numerus
qualiscunque sive cimplex sive
Literates chamacteretmerorum
In Algebra simplices maxime suusitati
sunt tum ipsi numeri ut 0. 1. 2. quos
tum literae; ut a. b. C.
Nam Algebra adhibet numeros ex Arithmetica,
adhibet praeterea et literas pro numeris
incertis, quanquam nonnulli et alios
ut a. b. tametsi sint qui adhibeant
etiam alios characteres, ut R. 
pro re. item  pro unitate incerta,
et similes. Sed communiter literae
sunt commodissimae
Characteris compositi sunt qui significant
quandam operationem in numeris
simplicibus.
ita 10, significat 9 + 1. et 12
significat, 10+2 et a + b significat
duorum a et b. additionem. et a- b
significat subtractionem b ab a, et
ab significat a multipl. per b. et
a significat a divis. per b. et et a + b  a - b
et a+ b significat a + b mult. per a - b.
a + b vel a + b, c- d signi
et Ccd
ficat atb divis. per c- d.
Omnis operatio in numeris sine quantitatibus
est augmentatio seu additio, vel diminutio
sive subtractio
Quia omnis in quantitatibus operatio
est quantitatis variatio quaedam, mutatio
autem quantitatis nihil aliud est
quam augmentatio  diminutio quaedam
ab fiit est a mahl b seu a multialoper b) Additio et subtractio sunt vel simplices
vel certa quadam lege repetitae composita
ita multiplicatio est repetita additio magnitudinis
ejusdem, divisio est repecita
subtractio ejusdem. Radicis extractio
est divisio per numerum aliquem
adhuc ignotum et quaesitum De quibus postea
Nam radicis extra quadraticae extractio
est divisio numeri dati per numerum ejusmodi
ui siat quoliens aponis aivisori. de quibus postea
30 significat 3 magl10 et
F et 100 significat 10 mabl 10, et
A  132 significat 100 + 30 +2