Ford, Kevin; Pollack, Paul On common values of \(\varphi(n)\) and \(\sigma(m)\). I. (English) Zbl 1265.11092 Acta Math. Hung. 133, No. 3, 251-271 (2011). Reviewer: Eira J. Scourfield (Egham) MSC: 11N37 11A25 PDFBibTeX XMLCite \textit{K. Ford} and \textit{P. Pollack}, Acta Math. Hung. 133, No. 3, 251--271 (2011; Zbl 1265.11092) Full Text: DOI arXiv
Peneva, T. P. On the ternary Goldbach problem with primes \(p_i\) such that \(p_i+2\) are almost-primes. (English) Zbl 0963.11058 Acta Math. Hung. 86, No. 4, 305-318 (2000). Reviewer: Péter Kiss (Eger) MSC: 11P32 PDFBibTeX XMLCite \textit{T. P. Peneva}, Acta Math. Hung. 86, No. 4, 305--318 (2000; Zbl 0963.11058) Full Text: DOI
Kátai, I.; Wijsmuller, M. On the iterates of the sum of unitary divisors. (English) Zbl 0902.11038 Acta Math. Hung. 79, No. 1-2, 149-167 (1998). Reviewer: Andrew Granville (Athens, GA) MSC: 11N37 11N56 PDFBibTeX XMLCite \textit{I. Kátai} and \textit{M. Wijsmuller}, Acta Math. Hung. 79, No. 1--2, 149--167 (1998; Zbl 0902.11038) Full Text: DOI
Kátai, I. On the number of prime factors of \(\varphi{} (\varphi{}(n))\). (English) Zbl 0751.11041 Acta Math. Hung. 58, No. 1-2, 211-225 (1991). Reviewer: Wolfgang Schwarz (Frankfurt / Main) MSC: 11K65 PDFBibTeX XMLCite \textit{I. Kátai}, Acta Math. Hung. 58, No. 1--2, 211--225 (1991; Zbl 0751.11041) Full Text: DOI
Groenewald, N. J. The completely prime radical in near-rings. (English) Zbl 0655.16025 Acta Math. Hung. 51, No. 3-4, 301-305 (1988). Reviewer: G.Betsch MSC: 16Y30 16Nxx 16Dxx PDFBibTeX XMLCite \textit{N. J. Groenewald}, Acta Math. Hung. 51, No. 3--4, 301--305 (1988; Zbl 0655.16025) Full Text: DOI