The symbol (with κ ≥ ω) denotes the space with the κ-box topology; this has as base all sets of the form with open in and with . The symbols w, d and S denote respectively the weight, density character and Suslin number. Generalizing familiar classical results, the authors show inter alia: Theorem 3.1.10(b). If κ ≤ α⁺, |I| = α and each contains the discrete space 0,1 and satisfies , then . Theorem 4.3.2. If and with D(α) discrete, |D(α)| = α, then . Corollaries 5.2.32(a) and 5.2.33. Let α ≥ 3 and κ ≥ ω be cardinals, and let be a set of spaces such that |I|⁺ ≥ κ. (a) If α⁺ ≥ κ and for each i ∈ I, then ; and (b) if α⁺ ≤ κ and for each i ∈ I, then .
@book{bwmeta1.element.bwnjournal-rm-doi-10_4064-dm748-2-2016, author = {W. W. Comfort and Ivan S. Gotchev}, title = {Cardinal invariants for $\kappa$-box products: weight, density character and Suslin number}, series = {GDML\_Books}, year = {2016}, zbl = {06622342}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-rm-doi-10_4064-dm748-2-2016} }
W. W. Comfort; Ivan S. Gotchev. Cardinal invariants for κ-box products: weight, density character and Suslin number. GDML_Books (2016), http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-rm-doi-10_4064-dm748-2-2016/