mathematics

Mohammed ibn Abdun al-Jabali

Mohammed ibn Abdun al-Jabali is a mathematics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Mohammed ibn Abdun al-Jabali rather than just read about it. In short: Abu Abd Allah Mohammed ibn Abdun al-Jabali al-Adadi (Arabic: محمد بن عبدون الجبلي العذري) (died after 976) was a physician and mathematician from Al-Andalus. He is the author of Risala fi al-Taksir (Treatise on Measurements), the oldest remaining mathematical text from Al-Andalus.

Key takeaways

Mohammed ibn Abdun al-Jabali belongs to mathematics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Mohammed ibn Abdun al-Jabali to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Mohammed ibn Abdun al-Jabali from memory before moving on to harder problems.

Reference excerpt

Abu Abd Allah Mohammed ibn Abdun al-Jabali al-Adadi (Arabic: محمد بن عبدون الجبلي العذري) (died after 976) was a physician and mathematician from Al-Andalus. He is the author of Risala fi al-Taksir (Treatise on Measurements), the oldest remaining mathematical text from Al-Andalus. He travelled to the learning centers in the East in the years after 958 C.E. He stayed in Basra and visited al-Fustat (Old Cairo), Egypt where he was put in charge of the hospital. Ibn Abdun studied the ideas of Abu Sulayman Sijistani (d. 990) and according to one source he met him personally in Basra. He returned to Cordoba in 971 C.E.. He entered the service of the Caliph al-Mustansir (died 976) and his son Hisham II al-Mu'ayad. Ibn Abdun was the teacher of Ibn al-Kattani.

References

Worked examples

Example 1 — a first encounter with Mohammed ibn Abdun al-Jabali

Start with the simplest possible case. Write down what Mohammed ibn Abdun al-Jabali claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Mohammed ibn Abdun al-Jabali before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Mohammed ibn Abdun al-Jabali ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Mohammed ibn Abdun al-Jabali

In research: Mohammed ibn Abdun al-Jabali appears in mathematics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Mohammed ibn Abdun al-Jabali in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Mohammed ibn Abdun al-Jabali is common in secondary-school and first-year university syllabi. It links to neighbouring topics 10th-century educators, 10th-century mathematicians, 10th-century medical doctors, so understanding it makes those chapters shorter.
In everyday life: Look for Mohammed ibn Abdun al-Jabali outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Mohammed ibn Abdun al-Jabali in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mohammed ibn Abdun al-Jabali means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Mohammed ibn Abdun al-Jabali out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mohammed ibn Abdun al-Jabali in simple terms?

Why does Mohammed ibn Abdun al-Jabali matter?

Because it connects several mathematics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Mohammed ibn Abdun al-Jabali?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Mohammed ibn Abdun al-Jabali.