Math jokes compilation (Chistes mates, 数学笑话)

I didn't really sort them by math level. Exactly, some jokes require deeper math understanding for a full experience, aka nerdy-level (sorry), so please just laugh if you like them. The jokes might come from across different languages, as long as I could understand (basically English, Chinese, Spanish, Catalan and French), I translate them in English and Chinese as long as the joke is compatible. If a joke was in Spanish, Catalan or French from source, I post them here too as reference.

我没有把笑话按数学水平分类。毕竟，有些笑话要求对数学有更深的理解才能体会，所以各位看官要是碰到喜欢的就付之一笑罢了。这些笑话的出处语言各有不同，但凡是我能读懂的（也就是英、西、中、法、加泰兰语）我就会挂在这里，同时只要能保留笑点就会翻译成英语和中文。当原文是西班牙语、加泰兰语或者法语的时候我会在这里备份一份。

No están clasificados por nivel de mates. Ya, algunos chistes requieren mejor comprensión en mates para entenderlos por completo, así que gocen de lo que les gusten. Los chistes provienen de fuentes de diferentes idiomas mientras que los pueda entender (es decir, en Inglés, Español, Chino, Catalán, o Francés), y los traduzco a Inglés y Chino siempre y cuando las gracias son compatibles. Si un chiste era originalmente Español, Catalán o Francés, los pongo aquí también.

1. The power of \(e^x\)

An exponential function \(e^x\) is walking down the street when it sees a polynomial running the other way, looking terrified.

"What's wrong?" \(e^x\) asks.

"There's a derivative coming around the corner!" the polynomial screams.

\(e^x\) puffs out its chest. "I’m not afraid. I’m \(e^x\)!"

It walks around the corner and confronts the operator. "I am \(e^x\)!" it proclaims.

The operator smiles and says, "Hi. I'm \(\frac{d}{dy}\)."

一个指数函数\(e^x\)在大街上散步，突然一个多项式踉踉跄跄往反方向跑，面露恐惧。

「发生啥事了？」\(e^x\)问。

「有个微分符号从拐角那儿往这边过来了！」多项式尖叫道。

\(e^x\)挺起胸脯：「我怕啥，我是\(e^x\)！」

它自信地前进，转过拐角，直面微分。「我是\(e^x\)！」它喊道。

微分符号轻轻一笑，说道：「你好啊，我是\(\frac{d}{dy}\)。」

2. Interesting numbers

A mathematician is asked, "Are all natural numbers interesting?" They proceed by contradiction: suppose not — then there's a smallest uninteresting natural number, which is quite interesting.

问一位数学家：「所有自然数都有趣吗？」他们开始用反证法：假设不对，那么就有一个最小的无趣的自然数，但这多有趣啊。