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Algorithms

Heap, Binary Tree, Data Structure it doesn't matter. This tag should be used for anything Algorithm & Data Structure focused.

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Two Pointers in Practice: Opposite Direction vs Fast and Slow Pointers

Two Pointers in Practice: Opposite Direction vs Fast and Slow Pointers

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4 min read
The adaptive threshold that deleted the thing we were looking for

The adaptive threshold that deleted the thing we were looking for

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5 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 Sliding Window Technique: Solving Subarray and Substring Problems in O(N)

The Sliding Window Technique: Solving Subarray and Substring Problems in O(N)

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4 min read
Speed Demon 2026: Every Millisecond Is a Soul

Speed Demon 2026: Every Millisecond Is a Soul

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15 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
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
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
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
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
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
How passport MRZ check digits work (with a validator in Python and JavaScript)

How passport MRZ check digits work (with a validator in Python and JavaScript)

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9 min read
Part 6: Quotient Filters - the Theory

Part 6: Quotient Filters - the Theory

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6 min read
How to Calculate Expected Value for a Polymarket Trading Bot in Python

How to Calculate Expected Value for a Polymarket Trading Bot in Python

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6 min read
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