Add new comment

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.
A basic introduction to the most powerful tools in science and enginnering.
As COP28, the 2023 United Nations Climate Change Conference, kicks off we look at how maths can help understand the climate crisis.
How do you create dramatic film out of mathematics? We find out with writer and director Timothy Lanzone.
Mathematics plays a central role in understanding how infectious diseases spread. This collection of articles looks at some basic concepts in epidemiology to help you understand this fascinating and important field, and set you up for further study.
Find out why the formula we use to work out conditional probabilities is true!
I happened upon the Numberphile video being discussed here and as a non mathematician I am wondering something.
The infinite sum 11+11+11...
If it is an infinite series , infinite being without end.
A question : does an infinite series have a beginning?
If it is truly infinite then surely it should be written ...+11+11+11...
It seems the article places a forward limit on the infinite series in order to mathematically manipulate it.
Any comment would be welcome.
Also in terms of infinity , surely if a number / series is infinite , then its always infinite , and merely writing a description of it does not create the series , or build its value.
The infinite series described by 1 + 2+ 3 + 4+ 5 ...
Is this "created" by the writing of its description , or is it fully infinite and only the description is being "built" and the idea that the sum diverges is merely a guide to writing the description?
Just wondering :)