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On second-order non-stationarity in two dimensionallattice processes

โœ Scribed by Giuseppe Arbia


Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
816 KB
Volume
9
Category
Article
ISSN
0167-9473

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One unary function says less than two in
โœ Bernd Loescher ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 643 KB

We show that the set of square numbers is the spectrum of an ~' ,,,-sentence (existential second order logic with quantification over unary function variables) with two unary function variables, but it is not the spectrum of IQ;,,-sentences with only one unary function variable. @ 1997 Elsevier Scie