Authors/Ockham/Summa Logicae/Book III-1

PART III-1: OF THE SYLLOGISM

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On the categorical syllogism

• Chapter 1 On the divisions and definitions of syllogisms.
• Chapter 2 Of certain preliminaries before we turn to the main subject.
• Chapter 3 On syllogisms of the first figure.
• Chapter 4 In which the claims of the previous chapter are proved.
• Chapter 5 For seeing when a syllogism is regulated by the dici de omni and when not.
• Chapter 6 On the sufficiency of the moods of the first figure
• Chapter 7 How the many arguments, which seem to contradict what was said above, are resolved.
• Chapter 8 That the major in the first figure can appropriately be singular, and the same conclusion follows which would follow if it were universal.
• Chapter 9 On syllogisms from assertoric propositions taken in the oblique case.
• Chapter 10 On syllogisms in the second figure from propositions in the nominative case.
• Chapter 11 On the reduction of syllogisms of the second figure into the four modes of the first figure
• Chapter 12 On syllogism [from propositions] in the oblique case in the second figure.
• Chapter 13 On how sometimes there is a good argument from affirmative propositions in the second figure.
• Chapter 14 On syllogisms of the third figure, and the sufficiency of their modes.
• Chapter 15 On syllogisms from propositions in the oblique case, in the third figure.
• Chapter 16 On expository syllogisms in the third figure.
• Chapter 17 On syllogisms from propositions in the past and future [tense] in the first figure.
• Chapter 18 On syllogisms from propositions in the past and future [tense] in the second figure.
• Chapter 19 On syllogisms from propositions in the past and future [tense] in the third figure.

On modal syllogisms

• Chapter 20 On the uniform generation of syllogisms from de necessario propositions in the first figure.
• Chapter 21 On uniform syllogisms from de necessario propositions in the second figure.
• Chapter 22 On uniform syllogisms from de necessario propositions in the third figure.
• Chapter 23 On uniform syllogisms from de possibili propositions in the first figure.
• Chapter 24 On uniform syllogisms from de possibili propositions in the second figure.
• Chapter 25 On uniform syllogisms from de possibili propositions in the third figure.
• Chapter 26 On uniform syllogisms from de contingenti (non necessary) propositions in the first figure.
• Chapter 27 On uniform syllogisms from de contingenti propositions in the second figure.
• Chapter 28 On uniform syllogisms from de contingenti propositions in the third figure.
• Chapter 29 On uniform syllogisms from de impossibili propositions
• Chapter 30 How it is possible to syllogise from other modal propositions which are not usually called 'modal' in the sense above.

On mixed syllogisms

Necessary and assertoric

• Chapter 31 On the mixture of necessary and assertoric (of inherence) propositions in the first figure.
• Chapter 32 On the mixture of necessary and assertoric propositions in the second figure.
• Chapter 33 On the mixture of necessary and assertoric propositions in the third figure.

Possible and assertoric

• Chapter 34 On the mixture of assertoric and possible propositions in the first figure.
• Chapter 35 On the mixture of assertoric and possible propositions in the second figure.
• Chapter 36 On the mixture of assertoric and possible propositions in the third figure.

Contingent and assertoric

• Chapter 37 On the mixture of assertoric and contingent (non necessary) propositions in the first figure.
• Chapter 38 On the mixture of contingent and assertoric propositions in the second figure.
• Chapter 39 On the mixture of contingent and assertoric propositions in the third figure.

Impossible and assertoric

• Chapter 40 On the mixture of assertoric and impossible propositions.

Assertoric and other modal propositions

• Chapter 41 On the mixture of assertoric propositions, and other modal propositions modified by 'known', 'doubted', 'per se in the first mode', and so on in the first figure.
• Chapter 42 On the mixture of such modes and assertoric propositions, in the second figure.
• Chapter 43 On the mixture of such modes and assertoric propositions, in the third figure.

Necessary and possible

• Chapter 44 On the mixture of necessary and possible propositions in the first figure.
• Chapter 45 On the mixture of necessary and possible propositions in the second figure.
• Chapter 46 On the mixture of necessary and possible propositions in the third figure.

Necessary and contingent

• Chapter 47 On the mixture of necessary and contingent propositions in the first figure.
• Chapter 48 On the mixture of necessary and contingent propositions in the second figure.
• Chapter 49 On the mixture of necessary and contingent propositions in the third figure.

Necessary and impossible

• Chapter 50 On the mixture of necessary and impossible propositions.

De necessario and other modals

• Chapter 51 On the mixture of de necessario propositions and of other modes from those four in the first figure.
• Chapter 52 On the mixture of de necessario propositions and of other modals in the second figure.
• Chapter 53 On the mixture of de necessario propositions and of other modals in the third figure.

Possible and contingent

• Chapter 54 On the mixture of possible and contingent in the first figure.
• Chapter 55 On the mixture of possible and contingent in the second figure.
• Chapter 56 On the mixture of possible and contingent in the third figure.

Possible and impossible

• Chapter 57 On the mixture of possible and impossible in every figure.

Possible and other modals

• Chapter 58 On the mixture of de possibili propositions and of other modals in the first figure.
• Chapter 59 On the mixture of de possibili propositions and of other modals in the second figure.
• Chapter 60 On the mixture of de possibili propositions and of others in the third figure.

Contingent and other modals

• Chapter 61 On the mixture of de contingenti propositions and of other modals in the first figure.
• Chapter 62 On the mixture of de contingenti propositions and of other modals in the second figure.
• Chapter 63 On the mixture of de contingenti propositions and of other modals in the third figure.

Other kinds of syllogism

• Chapter 64 On the mixture of other modal propositions than the previous four.
• Chapter 65 On syllogisms made from propositions having several exponents.
• Chapter 66 On syllogisms made from exclusives.
• Chapter 67 On syllogisms made from exceptives.
• Chapter 68 On hypothetical syllogisms.