روز جهانی ریاضیات👑 مبارک.
Aristotle: To Thales the primary question was not what do we know, but how do we know it.”
ارسطو: برای تالس نخستین سوال این نبود که چه می دانیم، بلکه این بود که چگونه می‌دانیم. (برگرفته از کتاب نقل قول های ریاضی ،کیمیا نارنجانی،مجید میرزاوزیری)

در باره ی پوستر بالا👇
The poster depicts a factorisation. At the top we find a mapping f, from A to B, represented by the work of picking vegetables from the field and depositing them in the warehouse. It decomposes into three mappings, a surjective one (left), the projection from A to A/Ker(f), given by the partition of the vegetables according to their storage place; a bijective one (bottom), from A/Ker(f) to Im(f), given by the deposit of the piles in the corresponding boxes; and an injective one (right), the inclusion from Im(f) to B, given by the movement of the boxes to its destination. The farmer is the mathematician Emmy Noether, author of this theorem and a fundamental figure of modern day algebra.

🆔@mathfree