Mathematics, Operational Research and Statistics are wide-ranging subjects, and that's reflected in the range and complexity of information resources that are relevant to you. In this guide we'll direct you to the most useful tools, and show you how to make best use of them.
Don't forget that whether you're a student or a member of staff, you're very welcome to contact the subject librarian for maths - I can give you expert advice on anything covered in this guide (and much more).
If you're looking for journal articles, these are some of the key databases you'll need. You can see some other useful databases below, and the listing of Science and Engineering Datasets.