# If aliens exist, do you think that they ever discovered/created their own Math?

Let's say that the aliens exist, do you think that they are smart enough to create their own Mathematics? Or even their own Sciences?

• if they're intelligent and given enough time, yes. They do need to develop social institutions first. Palaeolithic cultures don't do much science or mathematics. – a4android Jul 19 '18 at 3:06
• When you say "their own mathematics", do you mean mathematics in general, or mathematics different from human math? There's a rather large gap between those positions. – Cadence Jul 19 '18 at 3:09
• We usually advice a couple of things: 1) try to follow up on comments to your questions, they are normally done to help you improve it 2) wait at least 24 hours before accepting an answer: we have users all around the world, and a question which has an accepted answer attract less attention, reducing your chances of getting a larger pool of good answers. – L.Dutch Jul 19 '18 at 5:04
• @Schwern, I object that in a fictional world mathematical entities can be altered at pleasure. Maybe their names, but not their "substance". – L.Dutch Jul 19 '18 at 5:05

This is a rather philosophical question. Math is assumed to be an universal language of nature, with the ratio between a circle and its diameter being always $\pi$ allover the universe. As Galileo said,

the book of nature is written in mathematics

What can change is how the concepts are expressed: what we call $\pi$ might be called anything else by an alien culture, but its concept will stay the same.

This is not true for all the other languages of humans: we cannot even agree on a set of names for colors or seasons, just to tell you some example.

So, your aliens, given the right conditions, may develop a peculiar mathematical language, but its underlying theory will be the same as the one we know.

The rest of Science (and I am using Popper's definition of science as a theory which can be falsified) are instead less strongly universal. Just see at how the theory of motion evolved from the Aristotle to Einstein.

• To quote Mr. Incredible, “Math is math”. He was profound. – Dubukay Jul 19 '18 at 4:50
• Of course math comes from the observations of the underlying universe, but there's no reason to think in another universe, 1 plus anything results in a number which isn't larger. Maybe they count in multiples of $\pi$. Maybe they don't have the concepts of divide and subtraction (rather multiplying by the inverse and adding negative numbers), but the underlying concepts remain the same I think. – Neil Jul 19 '18 at 7:02
• but at the same time 3.14 might not be a familiar number not only from not using base 10, but also from preferring 6.283 – Andrey Jul 19 '18 at 21:18

Hard sciences can be defined as the development of theories about the real world, based on the method of testing falsifiable theories.

1. Think about the real world and existing scientific theories.
2. Make a theory which seems to explain the real world.
3. Use the theory to make predictions about how the real world functions if the theory is true. These predictions should be testable.
4. Test the predictions. If the test fails, discard the theory. If it does not fail, keep the theory.

There are no "true" scientific theories, only ones which have not failed yet. But if a theory is tested in many different ways and does not fail, one can have some faith that it won't fail anytime soon. (Consider Newtonian physics. Einstein and others proved that it is wrong, but it works on a human scale. You need to go to space or use extremely fine instruments to see the failures. So it is still taught in school, and used day-by-day.)

Mathematics is the science* of constructing and analyzing models out of formal logic and axioms.

• I believe that alien mathematics would be the same when it comes to basics like the natural numbers.
• Some models appear to explain observed reality very well.
• Other models are useful because their study teaches general truths about other models (which explain observed reality).
• Yet other models are not particularly useful to explain anything.
• Alien mathematics can and probably will differ in what advanced concepts they decide to explore, and what they will largely ignore.

To give you an example, consider Euclidean and Non-Euclidean geometry. Euclidean geometry is a better fit for plane geometry as we know it, so it is taught in school. Non-Euclidean geometry is useful to understand geometry in general, so it is studied at university.

For another example, aliens might largely ignore Bayesian probability and focus on the classical models.

Summarized: Science and mathematics are a way of analyzing the real world. As long as the real world is the same, the results of science and mathematics will be similar.

One could imagine an alien species without knowledge of DNA, even if these aliens have DNA similar to ours.

There might be an alien species without knowledge of quantum physics. That's more of a stretch because it complicates electronics.

A spacegoing alien species without calculus is hard to imagine, because they would have trouble to navigate.

* Calling mathematics a science is somewhat inaccurate because it does not apply the scientific method of falsifiable experiments. But that is close enough for most purposes.

I agree to most other answers that math should be universal. But, some fields and subfields develop mostly because they are needed. Arithmetic follows naturally from the need to count and keep track of things. Architecture would lead to the development of geometry. Advanced mathematics would help the development of advanced science and technology. Everything in math would be centered around the way these aliens are.

To give some examples, if the alien lives underground and most of its life consists in moving through tunnels, they would probably have a pretty rudimentary knowledge of geometry, but they would develop topology quite early.

If the alien was a highly cooperative species and dissent and individualism would be unknown to them, would the concept of mathematical proof ever develop and if it did, would it play the role it plays in our mathematics?

Or if the alien was a being made of fluid would low dimensional geometry make any sense to them? I think they might see inventing 2D geometry as big a leap as us inventing space time.

Mathematics would also look a lot different for a highly intelligent alien. Our best mathematicians are able to make seemingly unexpected connections between various areas of mathematics that seem too far apart. Would such aliens be able to invent and prove problems that are simply impossible for us? If one of us would look through their textbooks, even translated in our language and with a simple and friendly notation, they would not be able to comprehend anything.

Why can't our math be only our interpretation of our surroundings? I do not belive in this universal paradigm. Same goes for phisycs. The space-time fabric that can be bent? ... well... I trully think that time is measurment that we came up with. Think about it; Let's say that Einstein had the means to carry out his theory and put it to practice. By changing his onw time perspective what would happen to everyone and everything else?
In the 60's a golden disk was sent across the galaxy in hope of being intercepted by some other race and had information encoded in binary because it was assumed that some other race at least as developed as we, if not more, would understand that code. Boule wanted to create a system (to me another math per say) in wich there were only two possible outcomes regardless the matter. And it fitted well electricity and computers, the old 0 and 1. But now were evolving to the quantic field, so soon it's not going to be the simple on/off, is/isn't, 0/1. The foundation of math is axiomatic. Why one plus one is equal to two? If we had not currency and economy maybe numbers were not so important. If I'd be the only living human on earth why would I need math?

• in the 60s a probe called Voyager was sent out that on it was a Golden Disk, with information stored in many forms including binary, Voyager was sent out of our Suns influence, however it hasn't even reached the edge of that yet, let alone across the galaxy, Math is a simple way of quantifying stuff, it is not just currency and economics, numbers are important in everything we do in the modern world, if intelligent life exists it has maths, maths we could recognize, it may not be base 10, and the names of everything would be different but it would still be maths and it will always be important – Blade Wraith Jul 19 '18 at 12:50

Since we don't know anything about your setting or what defines "aliens", I'll offer the most out there example of a science-based science-fiction novel I know of: The Planiverse.

This is a novel by mathematician and computer scientist A K Dewdney. In it, him and his students make contact with a 2-dimensional alien, viewed side on like a side-scrolling video game, and follow him on an adventure across their 2-dimensional realm. They see 2-dimensional life, technology, and society. The book even contains a rather complete appendix of 2-dimensional physics and biology.

For example, in the Planiverse, gravity decreases linearly with distance, so there is no escape velocity. Perfect seals are very easy to make, so there's numerous safeguards against accidentally suffocating. People must walk over each other to pass, so there's an etiquette about who lies down. There can be no tubes for blood vessels, eating, or excrement; instead there are zipper cells.

So while the basic fundamentals of math are the same, and the scientific process still works, the results are extremely different because their reality works rather differently.

You can take this further and decide that in the alien's universe the basic axioms of mathematics are different. For example, in our universe when you add 1 to something you always get a bigger number. What if you didn't? What if there was no such thing as infinity? What if there's a point where adding 1 caused it to wrap around back to 0? Like "clock math". This isn't so far fetched, it's how numbers in computers actually work, they have limits. For example, with 8-bit unsigned integers 255 + 1 is 0. In a computer this is known as integer overflow, but in math this is modular arithmetic. As non-natives, we build up a fiction of arbitrarily large and precise numbers in computers to match how math works for us. But to an alien native to that reality it would be common knowledge that when you add 1 to a big number you get 0. Similarly for floating point numbers, they would accept that if you try to specify something too closely things get fuzzy. And they'd build their mathematical axioms to match this reality.

Maybe your aliens are living in a giant simulation, a serious question even for our own universe. Greg Egan's Permutation City wonders about life inside a computer simulation. The people in that simulation build a simulation within their simulation with its own physics and chemistry which develops its own intelligent alien life. His follow on Diaspora in the far, far, far, far, far, far future explores life forms in increasingly bizarre simulations and situations. For example, aliens which live in a holographic universe entirely within giant mats floating in the atmosphere of a gas giant. Who knows how math and physics work in there?

• I don't think you could accurately determine anything regarding a universe where adding 1 to something didn't result in a bigger number, but I believe the OP is referring to the same universe (and therefore same rules of physics). Even if you think the physics is different in another part of the universe, it makes all discussions on the matter pointless just the same. Also OP was asking specifically about math, not about physics. One precludes the other perhaps, but lets not start claiming that they're one and the same. – Neil Jul 19 '18 at 6:58
• @Neil "I don't think you could accurately determine anything regarding a universe where adding 1 to something didn't result in a bigger number..." Computers work that way, we've determined a whole lot about them, and they can simulate universes just fine. "I believe the OP is referring to the same universe..." We have no idea what universe the OP is referring to. This is Worldbuilding.SE, why add limits to their world that aren't there? "OP was asking specifically about math, not about physics..." They also asked about "sciences", physics is a science, and I addressed math as well. – Schwern Jul 19 '18 at 7:04
• @Neil "Even if you think the physics is different in another part of the universe, it makes all discussions on the matter pointless just the same." Disproving this notion is why I brought up The Planiverse. Plainly you can have a discussion about a universe where the physics are different. – Schwern Jul 19 '18 at 7:08
• I'm a programmer by trade, and to my knowledge, we have yet to simulate any universe, much less one where adding 1 to something resulted in a smaller number. Though I welcome links suggesting the contrary. I appreciate that you're expanding on possibilities, but if we started an argument with "Lets assume true=false", if you accepted that assumption, anything afterwards is both true and false. It would be ludicrous. Similarly, if you allow adding 1 to something to be less than the original number, then it is equally ludicrous. – Neil Jul 19 '18 at 7:09
• Every program you've ever written runs in a world where adding 1 can get you a lower number. I beg to differ. Maybe if you had some links you could show? Those "simulations" you describe are simulating how gravity might form galaxies. That's based on the very simple and very observed formula F=MA. It's hardly simulating alien life forms, I assure you. – Neil Jul 19 '18 at 7:22