Person crossing out artist's signature to claim work as their own Hand: https://pixabay.com/en/quality-hand-write-pen-signature-500958/ (public domain)
The UC Student Code of Conduct defines plagiarism as:
Intentional plagiarism is claiming sole authorship of a work that you know to have been written largely by someone else.
•Purchasing a pre-written paper (either by mail or electronically).
•Letting someone else write part or all of a paper for you.
•Paying someone else to write part or all of a paper for you.
•Submitting as your own someone else's unpublished work (including a computer program or algorithm), either with or without permission.
•Submitting as your own, work done jointly by a group in which you may have participated.
•Submitting work done by you, but for another class or another purpose without documenting that it was previously used.
•Creating phony citations.
Unintentional plagiarism is plagiarism that results from the disregard for proper scholarly procedures.
Examples of Unintentional Plagiarism:
Duke University Plagiarism Tutorial
University of Cincinnati Libraries
PO Box 210033 Cincinnati, Ohio 45221-0033