Page:Carroll - Euclid and His Modern Rivals.djvu/18

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xiv
ARGUMENT OF DRAMA.

PAGE

Scene II.

[Minos and Euclid.]


§ I. A priori reasons for retaining Euclid's Manual.


We require, in a Manual, a selection rather than a complete repertory of Geometrical truths
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Discussion limited to subject-matter of Euc. I, II.
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One fixed logical sequence essential
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One system of numbering desirable
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A priori claims of Euclid's sequence and numeration to be retained
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New Theorems might be interpolated without change of numeration
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§ 2. Method of procedure in examining Modern Rivals.


Proposed changes which, even if proved to be essential, would not necessitate the abandonment of Euclid's Manual:—
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(1)
Propositions to be omitted;
 
(2)
Propositions to be replaced by new proofs;
 
(3)
New Propositions to be added.
 
Proposed changes which, if proved to be essential, would necessitate such abandonment:—
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
(1)
Separation of Problems and Theorems;
 
(2)
Different treatment of Parallels.