Pacha yuyay
Apariencia
Pacha yuyay huk yachay, rurin yupatupu yachaypi. (pacha = τόπoς´; yuyay = 'logía'). Kay yachay riqsin mana uchkukayta continuity); mana wankinta ( form), mana tupunta ( size) riqsinchu.
Pacha yuyay A qurqahawa, nisqa huk A pa qurqa kallpanpa patman ( part of 2A), T. ( T is part of P(A)). Kayninkuna:
- Mayqan Tmanta kaqninkuna huñuy (union), kan T pa kaqnin.
- M, N kanku T pa kaqninkuna, chayqa A oqllay (intersection) B , kan T pa kaqnin.
- A, ø kanku T pa kaqnin.
Pacha yuyaylli tukuy tukshi (topological space) nin Awan T; <A, T >.