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Responsum: On Redemption

Hayya Ga’on

Early 11th Century

Illustration of a bearded man standing on a decorated pulpit and gesturing, below partly visible Arabic script.

Source

Letter to the Kohanim of Tunisia

Hayya Ga’on

Early 11th Century

Circular, intricate brass object with Arabic and Hebrew inscriptions, geometric markings, and a rotating arm.

Source

Responsum: On the Astrolabe

Hayya Ga’on

Early 11th Century

Source

Fragments on Astrology

Moses ha-Darshan

First Half of the 11th Century

Source

Book of the Commandments: On Variable Ripening in Barley

Levi ben Yefet

1006/7

Source

The All-Encompassing Book

Yūsuf al-Baṣīr

Kitāb al-muḥtawī

Before 1021

Contributor

Unknown Karaites

Source

Barley Observation Log

1027/8

Illustration of two golden-haloed figures in robes, one white-haired and bearded and the other younger, holding hands and gesturing.

Source

Preface to Ben Tehilim

Yehosef ben Samuel ha-Nagid

Mid-11th Century

Source

Treatise on Optics

Mid- to Late 11th Century

Source

Treatise on the Nature of the Soul: Introduction

Kitāb ma‘ānī al-nafs, Introduction

Mid-11th to Mid-12th Century

Source

Treatise on the Nature of the Soul: Substance and Accident

Mid-11th to Mid-12th Century