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CountingCert

Struct CountingCert 

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pub struct CountingCert {
    pub pigeons: u128,
    pub holes: u128,
}
Expand description

The pigeonhole counting certificate — the symmetry break taken to its absolute limit. For the complete bipartite instance PHP(pigeons → holes) (every pigeon may use every hole, each hole ≤ 1 pigeon), the full pigeon set has neighborhood = all holes slots, so Hall’s condition fails the instant pigeons > holes. That single inequality IS the refutation — sound, O(1), and scale-free.

This is the indisputable object. PHP(n) over booleans has n·(n−1) variables, and every resolution or CDCL refutation has at least 2^Ω(n) steps (Haken, 1985) — so for n = 2¹²⁸ the shortest possible search proof has more steps than a number with ~10³⁷ digits, beyond any computation this universe could ever run. The counting break decides and certifies the very same fact in one comparison.

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§pigeons: u128§holes: u128

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impl Clone for CountingCert

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fn clone(&self) -> CountingCert

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CountingCert

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for CountingCert

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fn eq(&self, other: &CountingCert) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for CountingCert

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impl Eq for CountingCert

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impl StructuralPartialEq for CountingCert

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.