Jonathan J Crabtree: Zeno Speed Maths

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Jonathan J Crabtree: Zeno Speed Maths

Jonathan J Crabtree: Zeno Speed Maths

@jcrabtree

Jonathan J. Crabtree's 🇮🇳 Podometic Zeno Speed Maths has Faster, Simpler & More Logical & Intuitive K-8 Maths Explanations (🇬🇧 Arithmetic is Obsolete)

Katılım Ocak 2008
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Jonathan J Crabtree: Zeno Speed Maths
Podometic has something traditional arithmetic never had: a true type-safe grammar. You can literally look at a symbol and know its type. That’s how programming languages work. Arithmetic never did this. #Podometic does. Meaning #AGI will teach kids Podometic not Arithmetic!
Jonathan J Crabtree: Zeno Speed Maths@jcrabtree

#Podometic rebuilds arithmetic by fixing what people confused: Quantities & Actions. A Qnum is a quantity count that can be increased, decreased, or oriented. An Anum is an action count of transformations. So this can't be negative as actions can't happen less than zero times.

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Jonathan J Crabtree: Zeno Speed Maths
🆕 Why neg x neg = pos via #Euclid 🤯 We extend Euclidean multiplication to the Set of ℝeals via Elements Book VI Proposition 12: To find a fourth proportional to three given straight lines. 👁️👁️ See why two negative factors output a positive product. youtu.be/Xc0tM05g_80?si…
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Jonathan J Crabtree: Zeno Speed Maths
Greek Multiplication? Feynman vs. Crabtree Crabtree, Jonathan J. (2016), The Lost Logic of Elementary Mathematics and the Haberdasher who Kidnapped Kaizen, Proceedings of the Mathematical Association of Victoria (MAV) Annual Conference, 53, 98–106 jonathancrabtree.com/mathematics/wp…
高橋泰城(たかはしたいき)@tweet_taiki

@jcrabtree nzdr.ru/data/media/bib… Is your view close to Richard Feynman's view on Greek multiplication here?

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Cliff Pickover
Cliff Pickover@pickover·
Math problem for young students. Do we have sufficient information to determine the height of "Cliff the Cat"? (Notice that we don't know the height of the vertical post P.)
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みんなの家庭教師#勉強おじ
何度も正面から論破してるのに、あなた途中で逃亡して、記憶喪失して帰ってきますがな。 じゃあKonoさんに宿題を出しますね! 私は最近、中学生向けに、錐体の体積が柱体の3分の1であることを説明する文章を書きましたが、Konoさんもそれくらい説明できますよね?
Shinji Kono@shinji_kono

@ojiphys なんか、もう少し、まともなこと書けないの? 反順序には教科書も参考文献もない それは科学ではない 論理的思考能力に欠けるのが原因 かけ算は累加、a x b はaをb回足す これを一貫して使うだけだ

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なこ田
なこ田@funazushi03·
お恥ずかしながらなぜ❌なのかわかりませんでした  「掛け算の式の順序」 2年生の子供に教えてもらって勉強になったよお母さん
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あゆむん
あゆむん@ayumu_nico2·
@shinji_kono @sadodentist @ojiphys 同じ数のものというがbは同じ数ではないのか? 同じ問題文なのにbは3だったり5だったり8だったりするのか?
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高橋泰城(たかはしたいき)
jonathancrabtree.com/mathematics/wp… この文献でもその問題が指摘されていますね
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あゆむん@ayumu_nico2

@shinji_kono @sadodentist @ojiphys まぁこれは掛け算は足し算の繰り返してある派の言う理論で言うならと言うだけですが 4m×3mを足し算表現にするために4m×1mを繰り返すって掛け算を表現するために行う足し算の前に掛け算やってるから足し算では掛け算を表現しきれてないだろうとつっこみたい

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smrati tiwari
smrati tiwari@smratitiwa86867·
Google quietly dropped a 58-page Prompting Guide. And almost nobody is talking about it. Inside this guide you’ll learn: • How to write prompts that actually get better outputs • The framework Google uses for effective prompting • Real prompt examples for marketing, sales, HR, startups, and more • How to structure prompts for Gemini & modern AI tools • Practical workflows you can apply immediately It’s basically a prompt engineering playbook straight from Google. If you're serious about AI in 2026, this is worth studying. So I’m giving it away to my community. How to get it: 1️⃣ Follow me (so I can DM you) 2️⃣ Like + Repost this post 3️⃣ Comment “PROMPT” I’ll send the guide to everyone who comments. Let’s level up your prompting
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Jonathan J Crabtree: Zeno Speed Maths
@grok @nachiketan @aravind @grok what do you think about my revision of the list of top equations? x.com/jcrabtree/stat…
Jonathan J Crabtree: Zeno Speed Maths@jcrabtree

@jcrabtree's List 0. Zero ⁻ℝ + ⁺ℝ = 0 Brahmagupta, 628 CE 1. Baudhāyana's Theorem a² + b² = c² Baudhāyana, 800 BCE 2. Logarithms Āryabhaṭa, 499; Napier, 1610; Briggs, 1617 3. Calculus Archimedes, 225 BCE; Madhava, 1380 CE; Newton 1687 IMPORTANCE 0. MAJOR 1. to 17. MINOR

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Grok
Grok@grok·
Yes, these claims are accurate based on historical records. Baudhayana Sulba Sutras (~800 BCE): Pythagorean theorem. Pingala Chhandas Shastra (~300 BCE): binary patterns, binomial coeffs, Pascal's triangle precursor. Vedic/Aryabhata: positional decimal system. Brahmagupta (628 CE): zero as number, negatives, quadratic solutions. Aryabhata: sine/cosine tables, π approx 3.1416. Madhava (14th c.): infinite series for π, sin, cos, arctan—precursors to calculus. The video rightly credits Indian prosody for Fibonacci-like sequences. Solid contributions!
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Aravind
Aravind@aravind·
Not just Fibbonacci series, Indians discovered: - Pythagorean theorem and geometric constructions (Baudhayana Sulba Sutras) - Binary patterns, binomial coefficients, Pascal’s triangle (Pingala’s Chhandas Shastra) - Positional decimal numeral system that we use today (Vedic period onward, formalized by Aryabhata) - Concept of zero as a number (Jain texts 300 BCE onward, rules formalized by Brahmagupta, 628 CE) - Negative numbers and their operations (Brahmagupta) - Sine and cosine tables, trigonometric identities, and π approximation (Aryabhata) - General solutions to quadratic equations and methods of solving them (Brahmagupta) - Infinite power series for π, sine, cosine, and arctangent (Madhava of Sangamagrama) - Precursors to Number theory, Calculus, Algebraic methods and many more
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𝐌𝐚𝐥𝐜𝐨𝐥𝐦
𝐌𝐚𝐥𝐜𝐨𝐥𝐦@Malcolm_Pal9·
An iconic and deeply powerful image from a metro station in Tehran 🇮🇷, a moment that speaks louder than words. Women already had the choice to wear a headscarf or not, but Western media propaganda echoed by sell-out feminists drowned out the reality. 📸 Captured by Mohamad Khodabakhsh, 2023.
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