If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
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Help
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Rabota sostoit iz trekh chastey. Pervaya iz nikh posvyashchena obshchey topologii. V ney dokazano, chto esli X tikhonovskoe prostranstvo, Y metrizuemyy kompakt, a prostranstvo C(X,Y) nepreryvnykh otobrazheniy iz X v Y v topologii potochechnoy skhodimosti normal'no, to ono kollektivno normal'no. Vtoraya chast' otnositsya k teorii grafov. V ney pokazano, chto esli G nepustoy i nepolnyy vrashchaemyy graf, kolichestvo vershin kotorogo yavlyaetsya prostym chislom, to G soderzhit dyru ili antidyru dliny ne men'shey 5. Nakonets, v tret'ey chasti rassmatrivayutsya algebry s dvumya kommutiruyushchimi unarnymi operatsiyami (to est' kommutativnye 2unoidy). Polucheno opisanie vsekh takikh svyaznykh algebr, reshetka kongruentsiy kotorykh distributivna. Rabota mozhet byt' interesna studentam i prepodavatelyam matematicheskikh fakul'tetov universitetov, a takzhe nauchnym rabotnikam.
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birth defects, or other reproductive harm.
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⚠️ California Proposition 65 Warning: Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.