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- Masanori Itai, Akito Tsuboi, Kentaro Wakai
- J. Symb. Log.
- 2004

- John T. Baldwin, Masanori Itai
- Math. Log. Q.
- 1994

- Masanori Itai
- J. Symb. Log.
- 1991

We searched for a new cell aggregation factor for hepatoma AH109A cells, and found one we called HAF in the culture filtrate of Streptomyces sp. strain No. A-6143 isolated from a soil sample. HAF was purified by salting-out with ammonium sulfate. DEAE-cellulose column chromatography, gel filtration on Sephadex G-100, and hydroxylapatite column… (More)

- Masanori Itai, Kentaro Wakai
- Math. Log. Q.
- 2005

B. Zil’ber introduced the notion of quasi-minimality; Definition 1.1 An uncountable first-order structure M is called quasi-minimal, if for any definable (allowing parameters) subset X of M either X or M −X is finite or countable. Zil’ber conjectures that Cexp = (C,+, · , exp, 1, 0) is quasi-minimal. This conjecture is still open. Inspired by this… (More)

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