Pacha yuyay

Pacha yuyay huk yachay, rurin yupatupu yachaypi. ( pacha = τόπoς´; yuyay = 'logía'). Kay yachay riqsin mana uchkukayta continuity); mana wankinta ( form), mana tupunta ( size) riqsinchu.

Konigsburg chakakuna: Euler -pa awrishan

Pacha yuyay A qurqahawa, nisqa huk A pa qurqa kallpanpa patman ( part of 2^A), 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 >.

Khaway kaypipas

• Pacha tupuy

T'inkiykuna

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