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Original price €23,15 - Original price €37,26
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€23,15 - €37,26
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Sheldon: "The best number is 73. Why? 73 is the 21st prime number. Its mirror, 37, is the 12th and its mirror, 21, is the product of multiplyi...

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Original price €21,13 - Original price €35,24
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€21,13 - €35,24
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Many are those that want to tempt you, entice you, and win you over to their side. But there's only one side that offers you what you really n...

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Original price €1,46 - Original price €6,00
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It's strange that, alongside supporters of authoritarian systems in dystopian novels, scientists of all people make conspicuously frequent mistakes...

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Original price €1,46 - Original price €6,00
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Some things are simply too complex to ignore. Like the fact that you can't (normally) take a root from a -1. Oh, but they had such a beautiful futu...

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Original price €1,46 - Original price €6,00
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Good jokes are almost as great as fresh cake. If you like both, this button is just the thing. You can also use it to tell everyone about the great...

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Original price €1,46 - Original price €6,00
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Sometimes it just doesn't help: you want to change and integrate and in the end nothing changes. With this button you can show your sympathy for po...

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Original price €1,46 - Original price €6,00
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It doesn't always have to be a large cattle phi, a herd of small phi can also be very productive. However, it is better not to eat the meat rho...

Original price €1,46 - Original price €6,00
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What's better than a Pi? Eight pi, or more precisely one octopi. This number is exactly eight times more infinite than pi. You don't believe us? Wh...

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Original price €1,46 - Original price €6,00
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15 nerds on the admin's chest, yo-ho-ho and a mug of coffee! If ye arrrr one o' them people who be Pi rates, you should tell ever'one by wearing th...

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Original price €20,11 - Original price €34,24
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If the bible had been written by physicists, the maxwell equations would have been in it for sure.

Original price €13,06 - Original price €27,18
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Did you see that ridiculous display last night?The perfect start for a manly conversation about sports!Of course, you need to dress right, but you ...

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Original price €23,15 - Original price €37,26
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Do you see real beauty where others just see numbers? Are perfect formulas and graphs your type of art? No matter where and when, do you think that...

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Original price €21,13 - Original price €35,24
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Helping others solving their problems with maths - no problem! Just give them your number. ;)This shirt is available in German, only. :(

Original price €10,03 - Original price €10,03
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When it comes to charms, we nerds usually think of powerful spells in pen-and-paper games, the counterpart to the Strange Quark or simply a certain...

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Here we have an octopus with eight (Latin: octo) arms. No ordinary arms of course, but Pi arms! That makes this being an Octopi. :)(By the way, wha...

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Original price €21,13 - Original price €35,24
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Maths is everywhere and especially bright when Pi is included. Unfortunately, there're too many mere mortals who don't see the beauty of ...

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Original price €20,11 - Original price €34,24
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A call, a dramatic camera pan and you realize: Shit just got real.This doesn't only happen to DEA agents à la Bad Boys, it is a common ...

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Original price €20,11 - Original price €34,24
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YOU - SHALL - NOT - PASS! Gandalf taught us we should be really afraid of Balrogs and flee as fast as possible instead of gaping in astonishment. O...

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