Hölder summation is a way of adding up lots of numbers in a special way. Imagine you have a bunch of numbers, like 2, 5, 8, and 11. You can add them up like normal and get 26. But with Hölder summation, you can do something different.
First, you pick a special number between 0 and 1, called a "weight," like 0.5. Then you raise each number to that weight, like 2 raised to the 0.5 power is √2, or about 1.4. You do this for every number in the group.
Next, you add up all the raised numbers together. So with our example, you would add up √2, √5, √8, and √11. This gives you a new number, which we call the "Hölder sum."
Finally, you raise the Hölder sum to the reciprocal of the weight, or 2 in our example. So if the Hölder sum was 5, you would raise it to the power of 1/2, which is the same as taking the square root. This gives you the final answer.
Hölder summation can be useful in math and science when dealing with large sets of data, because it can give you a different way of looking at the information and can sometimes make patterns or trends easier to see.