Al-Khwarizmi
" The Father of Algebra." (780 - 845 C.E.) Abu Abdullah Muhammad bin Musa Al-Khwarizmi was a Persian mathematician and astronomer. He wrote the famous book "Al-Kitab Al-Mukhtasar fi Hisab Al-Jabr Wa'l-Muqabala" ("The Compendious Book on Calculation by Completion and Balancing") in 830. The book offered a systematic and logical approach to solving linear and quadratic equations. This became the premise of algebra. He is also responsible for introducing the Hindu-Arabic numerals to the West, thus becoming the golden standard in global mathematics. He also refined Ptolemy's theories on geography to design the first map of the then "known world", wrote on spacial, time-mechanical devices such as the clock, astrolabe, and sundial, made a table of trigonometric functions, and geometrically interpreted the conic sections.
The Urban Dictionary Mug
Customer Reviews
The coffee mug looks great and always draws comments from others.
FUCKING BEST CUP EVER NGL
So fun! Looks just like I expected. I like that I could edit the mug to say what I want.
The mug is beautiful and I love it! Thank you for having a handle large enough for a man to hold onto! ♥️
Istgd imma force my mum to buy this idek hw i find out but this shit looks fucking fire
Jim, you’re a fucking idiot interfering with accurate ratings and legitimate feedback. Get a hobby.
Loved this mug! So unique and you can edit the text to add something unique.
I gave it to my friend who took money from me and never returned.
This is to test if the Urban Dictionary store rating system is working and not showing fake 5 star reviews.
This mug is incredible! It was a great gift for my friend named Jacob, who is definitely gay. (Even though he says he isn't 🙄)
dear Jim. B whose 1 star test review is showing up on top: thank you for your service sir
Hello, I am here to present if this is a real rating system or not. If you are reading this it's a true rating system. But if this doesn't make it, urban dictionary, I know what you are doing.
This was a phrase my husband and I made up even we first started dating. We laughed so hard while submitting it. The mug is perfect!
Arrived speedily and exactly as pictured.
I LOVE GETTING THE FUCKING MUG
The wife absolutely loved it for her birthday
Cute, good quality, *****!
My order was delivered very quickly and was high quality. Glad to add it to my mug shelf.
These mugs are great! Great Quality and variety of colors also!
Awesome mugs!
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