Re: Comments on Norbert's topological extension of relational algebra
From: Nicola <nvitacolonna_at_gmail.com>
Date: Sat, 19 Dec 2015 13:16:32 +0100
Message-ID: <n53hr0$2vsa$1_at_adenine.netfront.net>
> I'd say {1,4,5} and {3,4,6} is wrong with respect of your intention:
> B = {{7}, {4,7}, {5,7}, {6,7}, {1,4,5,7}, {2,5,6,7}, {3,4,6,7}}
> as a basis B such that
Date: Sat, 19 Dec 2015 13:16:32 +0100
Message-ID: <n53hr0$2vsa$1_at_adenine.netfront.net>
On 2015-12-19 11:14:52 +0000, Norbert_Paul said:
>>
> I'd say {1,4,5} and {3,4,6} is wrong with respect of your intention:
> B = {{7}, {4,7}, {5,7}, {6,7}, {1,4,5,7}, {2,5,6,7}, {3,4,6,7}}
> as a basis B such that
Ah, right.
I had written a slightly different example in a first draft of my post,
and then changed it. But I forgot to update the topology and the remark
about the open/closed edges.
Thanks for the correction!
Nicola
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