How or where does one express work they've done to others?
What does it mean formally to 'publish' mathematical work you've done?
How do you know if your work is any good?
Or if someone has already addressed or came up with the same idea as you? Is there a certain age required to show your work?
Do you need a formal education or degree in mathematics to share your work with others?
Also I'm about 17, and I'm going to be trying to apply for colleges soon, I don't have very many extracurricular activities, or awards or anything. And I know some art schools accept portfolios of art work people have done, can you submit research or work you've done to a technical college as part of your admission application?