Gaṅgeśa's Tattvacintāmaṇi establishes that pervasion (vyāpti) is undermined precisely when the reason is present alongside the confirmed absence of the probandum, not merely its non-presence.

?Rate how convincing each reason is below to see the overall strength.

1 reason for

1 reason against

Reasons For

1 perspective

Reason for

1 perspective

Reason against

Based on where you are in your exploration

Confirmed absence(distinguished from mere non-presence in the logical argument): When you can clearly observe or verify that something is definitely not present in a particular case.
Gaṅgeśa(as the main philosopher being discussed): A medieval Indian philosopher (lived around 1300s) who founded an important school of logic and epistemology in Hindu philosophy, known for developing sophisticated theories about how we know things are true.
Non-presence(contrasted with confirmed absence): Simply the lack of something, without necessarily confirming that it's definitely absent.
Probandum(what should be proven in a logical argument): The thing you're trying to prove in an argument; the conclusion you want to establish as true.
Reason (in logic)(the evidence used to support a logical conclusion): Evidence or a fact you point to in order to prove your main claim—like pointing to smoke as the reason to believe there's fire.
Tattvacintāmaṇi(as the specific text being analyzed): The title of Gaṅgeśa's major philosophical work, which means 'Jewel of Reflection on Reality'—it's a detailed logical and epistemological treatise that became hugely influential in Indian philosophy.
pervasion (vyāpti)(Nyāya theory of inference): A relation between two properties such that any locus of the absence of the inferred property is also not a locus of the reason property; i.e., the reason property is always accompanied by the inferred property

1 topic