We prove that any regular resolution proof for the weak pigeon hole principle, with n holes and any number of pigeons, is of length \( \Omega {\left( {2^{{n^{\varepsilon } }} } \right)} \), (for some global constant ε > 0).
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* Research supported by NSF grant CCR-9820831, US-Israel BSF grant 98-00349, and an NSERC grant.
† Research supported by US-Israel BSF grant 98-00349, and NSF grant CCR-9987077.
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Pitassi*, T., Raz†, R. Regular Resolution Lower Bounds For The Weak Pigeonhole Principle. Combinatorica 24, 503–524 (2004). https://doi.org/10.1007/s00493-004-0030-y
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DOI: https://doi.org/10.1007/s00493-004-0030-y