They are as follows:
1. Ḳal (ḳol) wa-ḥomer: "Argumentum a minori ad majus" or "a majori ad minus"; corresponding to the scholastic proof a fortiori.
2. Gezerah shawah: Argument from analogy. Biblical passages containing synonyms or homonyms are subject, however much they differ in other respects, to identical definitions and applications.
3. Binyan ab mi-katub eḥad: Application of a provision found in one passage only to passages which are related to the first in content but do not contain the provision in question.
4. Binyan ab mi-shene ketubim: The same as the preceding, except that the provision is generalized from two Biblical passages.
5. Kelal u-Peraṭ and Peraṭ u-kelal: Definition of the general by the particular, and of the particular by the general.
6. Ka-yoẓe bo mi-maḳom aḥer: Similarity in content to another Scriptural passage.
7. Dabar ha-lamed me-'inyano: Interpretation deduced from the context.
Concerning the origin and development of these rules, as well as their susceptibility of logical proof, see Talmud—Hermeneutics.
RULES OF HILLEL, THE SEVEN - JewishEncyclopedia.com