That which belongs to you (singular); the possessive second-person singular pronoun used without a following noun.
If this edit is mine, the other must be yours. Their encyclopedia is good, but yours is even better. It’s all yours.
That which belongs to you (plural); the possessive second-person plural pronoun used without a following noun.
Written at the end of a letter, before the signature.
Yours sincerely, Yours faithfully, Yours, Sincerely yours,