inference schema

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inference schema

logic

Also known as: Inference schemata, inference form

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formal logic
General observations
…above may be called an inference form, and (1) and (2) are then instances of that inference form. The letters—X, Y, and Z—in (3) mark the places into which expressions of a certain type may be inserted. Symbols used for this purpose are known as variables; their use is analogous…
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…above may be called an inference form, and (1) and (2) are then instances of that inference form. The letters—X, Y, and Z—in (3) mark the places into which expressions of a certain type may be inserted. Symbols used for this purpose are known as variables; their use is analogous…
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history of logic
The Megarians and the Stoics
Chrysippus regarded five valid inference schemata as basic or indemonstrable. They are:
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Chrysippus regarded five valid inference schemata as basic or indemonstrable. They are:
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