Sumeet Motwani on X: "A Hadamard matrix of order 668 has been found by @__alpoge__!! This has been the smallest unresolved case of the Hadamard conjecture for about 21 years.
We previously tested GPT 5.6 Sol Max Reasoning and Claude Fable on this problem as part of HorizonMath (@erikyw26) and no https://t.co/YLAnFPlL0v" / X<br>Post
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Sumeet Motwani on X: "A Hadamard matrix of order 668 has been found by @__alpoge__!! This has been the smallest unresolved case of the Hadamard conjecture for about 21 years.
We previously tested GPT 5.6 Sol Max Reasoning and Claude Fable on this problem as part of HorizonMath (@erikyw26) and no https://t.co/YLAnFPlL0v"
Sumeet Motwani
@sumeetrm
A Hadamard matrix of order 668 has been found by @__alpoge__!! This has been the smallest unresolved case of the Hadamard conjecture for about 21 years.
We previously tested GPT 5.6 Sol Max Reasoning and Claude Fable on this problem as part of HorizonMath (@erikyw26) and no model found a valid solution.
span:not(:empty)~span:not(:empty)]:before:content-['·'] [&>span:not(:empty)~span:not(:empty)]:before:px-1 [&>span:not(:empty)~span:not(:empty)]:before:shrink-0 min-w-0 overflow-hidden">levent
@__alpoge__
6h
+++-+-+-+-+--+--+++-++----++--+----+-----+++---++-+---+++++++-+--+-+-+--++-+--+--+----+-+-+-+-++-++---+--++++--++-++++-+++++--+---++-+---+++++++++--+-+-+--++-+--+--+-----+++-+++-++-+-++++-++-+--+--+------++--+-++-+-+---+--+-+-+-+--++---+++++-----+++++++---+---+--+-+--+-+--+-++-++ Show more
span:not(:empty)~span:not(:empty)]:before:content-['·'] [&>span:not(:empty)~span:not(:empty)]:before:px-1 [&>span:not(:empty)~span:not(:empty)]:before:shrink-0">1:38 PM · Aug 12, 202638.1KViews
18<br>255<br>68
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@sumeetrm
4h
Actually this might be all open orders under 2000!!!
17<br>1.9K
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@sumeetrm
4h
drive.google.com/drive/folders/…<br>All open hadamard matrices under 2k here
16<br>1.7K
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@sumeetrm
4h
HH^T = nI_n
1.5K
span:not(:empty)~span:not(:empty)]:before:content-['·'] [&>span:not(:empty)~span:not(:empty)]:before:px-1 [&>span:not(:empty)~span:not(:empty)]:before:shrink-0 min-w-0 overflow-hidden">Kale-ab Tessera<br>@KaliTessera
3h
You guys should have added "make no mistakes", "keep going" & "believe in yourself" to the prompt 😂
885
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Sumeet Motwani@sumeetrmFollow<br>ML PhD at Oxford, Previously CS at UC Berkeley
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