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Today's Topics:
1. Re: library for lattice data structure (Dudley Brooks)
2. Re: library for lattice data structure (Kim-Ee Yeoh)
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Message: 1
Date: Wed, 12 Mar 2014 09:09:51 -0700
From: Dudley Brooks <[email protected]>
To: [email protected]
Subject: Re: [Haskell-beginners] library for lattice data structure
Message-ID: <[email protected]>
Content-Type: text/plain; charset=windows-1252; format=flowed
On 3/12/14 1:19 AM, Kim-Ee Yeoh wrote:
> On Wed, Mar 12, 2014 at 11:35 AM, James Toll <[email protected]
> <mailto:[email protected]>> wrote:
>
>> Coming from a finance background, differences in terminology
>> between finance, physics, math, and statistics is par for the
>> course. I?ll have to be better about understanding the terminology
>> from a math perspective and will try to keep that in mind when
>> posting to this list.
>
> On deeper reflection, I realize it's more complicated than that.
> Because there are at least two meanings in math.
>
> The lattices on hackage are all about posets and meets and joins,
> tracing back to the work of Birkhoff in that subspecialization of
> algebra known as order theory.
>
> Then there are the lattices in sphere packings and geometric number
> theory and 'lattice'-based cryptography, cf ntru.
>
> One could say that the geometric lattices are closer to binomial
> lattices, but not really. I wonder why 'binomial tree' isn't
> perfectly cromulent.
Thanks. Your comments have embiggened our understanding.
--
Dudley
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Message: 2
Date: Wed, 12 Mar 2014 23:45:50 +0700
From: Kim-Ee Yeoh <[email protected]>
To: [email protected], The Haskell-Beginners Mailing List -
Discussion of primarily beginner-level topics related to Haskell
<[email protected]>
Subject: Re: [Haskell-beginners] library for lattice data structure
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On Wed, Mar 12, 2014 at 11:09 PM, Dudley Brooks
<[email protected]>wrote:
> Thanks. Your comments have embiggened our understanding.
No Springfield and no bicentennial, but I just realized that I don't know
how to represent Pascal's Triangle properly in Haskell -- omg!
Google would be cheating. Also boring.
So I've self-assigned myself this essay.
-- Kim-Ee
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