1008 Index Wilson, R. L., 748 Witt, E., 531 word, 272 empty, 272 length, 272 reduced, 273 yoke, 951 Yoneda, N., 493, 825 Zaks, A., 802 Zariski closure, 357 Zariski topology on kn, 352 on Spec(R), 359 Zariski, O., 352 Zassenhaus Lemma, 252 modules, 525 Zassenhaus, H., 773 zero complex, 784 zero divisor, 84 zero object, 435 zero of polynomial, 349 zero polynomial, 91 zero ring, 82 zero-divisor, 533 on module, 957 Zorn’s Lemma, 318 Zorn, M., 318

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