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Two roots, one valid size: a local Spark-X2.5-1.7B and SymPy demonstration

Two roots, one valid size: a local Spark-X2.5-1.7B and SymPy demonstration

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4 min read
Two roots, one valid size: a local Spark-X2.5-1.7B and SymPy demonstration

Two roots, one valid size: a local Spark-X2.5-1.7B and SymPy demonstration

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4 min read
4.2 / 0.6 = 7.000000000000001: testing calculator formulas against hand-worked examples

4.2 / 0.6 = 7.000000000000001: testing calculator formulas against hand-worked examples

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4 min read
Cube translates in non-abelian groups: what commutativity is worth

Cube translates in non-abelian groups: what commutativity is worth

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13 min read
The Littlewood conjecture in October 2026: what is proved, what changed in 2026, what is open

The Littlewood conjecture in October 2026: what is proved, what changed in 2026, what is open

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16 min read
The Anchor Step: One Mod-12 Formula That Determines Every Position in a Zi Wei Dou Shu Chart

The Anchor Step: One Mod-12 Formula That Determines Every Position in a Zi Wei Dou Shu Chart

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4 min read
Kakeya sets of rank r over F_2: why 2^(3n/4) is optimal

Kakeya sets of rank r over F_2: why 2^(3n/4) is optimal

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13 min read
Where Did 90% of My Photo Go? JPEG Compression, Explained Gently

Where Did 90% of My Photo Go? JPEG Compression, Explained Gently

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5 min read
Kakeya sets of higher rank over a fixed finite field: the second-order term

Kakeya sets of higher rank over a fixed finite field: the second-order term

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10 min read
Lehmer's problem in October 2026: what is proved, what has been computed, what is open

Lehmer's problem in October 2026: what is proved, what has been computed, what is open

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15 min read
Legendre's conjecture in October 2026: what is proved, what has been computed, what is open

Legendre's conjecture in October 2026: what is proved, what has been computed, what is open

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14 min read
The Hadamard conjecture in October 2026: what is proved, what Claude-assisted constructions settled, what is open

The Hadamard conjecture in October 2026: what is proved, what Claude-assisted constructions settled, what is open

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10 min read
Smaller Kakeya sets over small finite fields: a new upper bound for every q >= 4

Smaller Kakeya sets over small finite fields: a new upper bound for every q >= 4

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19 min read
The Kakeya conjecture in October 2026: what is proved, what changed in 2025-2026, what is open

The Kakeya conjecture in October 2026: what is proved, what changed in 2025-2026, what is open

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22 min read
Maths: OpenAI posted 722 AI proofs, 42% machine-checked

Maths: OpenAI posted 722 AI proofs, 42% machine-checked

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9 min read
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