Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Euler akakarakadza kurongedza shoko rokuti "sum" kanoverengeka. Muchiitiko che 1 − 2 + 3 − 4 +..., pfungwa dzake dzakafanana neiyo zvino inozivikanwa seAbel summation:  Mubvunzo: Pfungwa dzaEuler dzakafanana nei?
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