A recognition criterion for lax-idempotent pseudomonads
classification
🧮 math.CT
keywords
criterionlax-idempotentarrowsbilimitscolaxeasypseudomonadsbehaviour
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We describe a simple criterion which makes it easy to recognise when a pseudomonad is lax-idempotent. The criterion concerns the behaviour of colax bilimits of arrows - certain comma objects - and is easy to verify in examples. Building on this, we obtain a new characterisation of lax-idempotent pseudomonads on 2-categories with colax bilimits of arrows.
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