Abstract
Let Rα := {r ∈ ℝ : coz(α − r) ≠ → p} for every α ∈ 𝓡(L). The ring 𝓒c (L) is introduced as a pointfree version of the subring 𝓒c(X) of C(X) by Rα. In this paper, we show that 𝓒c(X) is a z-good ring and every radical ideal in it is an absolutely convex ideal. Also, we study this result which for any frame L, there exists a zero-dimensional frame M, which is a continuous image of L and 𝓒c(L) ≅ 𝓒c(M).
Acknowledgement
We would like to express our deep gratitude to the referee for improving the article with useful comments.
(Communicated by Tomasz Natkaniec)
References
[1] Aliabad, A. R.—Mahmoudi, M.: Pre-image of function in Cc(L), Categ. Gen. Algebr. Struct. Appl. 15(1) (2021), 35–58.Search in Google Scholar
[2] Atiyah, M. F.—MacDonald, I. G.: Introduction to Commutative Algebra, Addison Wesley Publishing Co., 1969.Search in Google Scholar
[3] Ball, R. N.—Hager, A. W.: On the localic yosida representation of an archimedean lattice ordered group with weak order unit, J. Pure Appl. Algebra 70 (1991), 17–43.Search in Google Scholar
[4] Banaschewski, B.: The Real Numbers in Pointfree Topology, Textos de Matemática (Series B), Univ. Coimbra, vol. 12, 1997.Search in Google Scholar
[5] Dowker, C. H.—Papert, D.: On Urysohn’s lemma, General Topology and its Relations to Modern Analysis, Proceedings of the second Prague topological symposium, 1966. Academia Publishing House of the Czechoslovak Academy of Sciences, 1967, pp. 111–114.Search in Google Scholar
[6] Dube, T.: Concerning F-frames, Algebra Universalis 62 (2009), 273–288.Search in Google Scholar
[7] Dube, T.: Concerning P-frames, essential P-frames, and strongly zero-dimensional frames, Algebra Universalis 61 (2009), 115–138.Search in Google Scholar
[8] Dube, T.: Some ring-theoretic properties of almost P-frames, Algebra Universalis. 60 (2009), 145–162.Search in Google Scholar
[9] Dube, T.: More ring-theoteric characterization of P-frames, J. Algebra Appl. 14(5) (2015), Art. ID 1550061.Search in Google Scholar
[10] Dube, T.—Ighedo, O.: On z-ideals of pointfree function rings, Bull. Iranian Math. Soc. 40(3) (2014), 657–675.Search in Google Scholar
[11] Estaji, A. A.—Karimi Feizabadi, A.—Abedi, M.: Zero set in pointfree topology and strongly z-ideals, Bull. Iranian Math. Soc. 41(5) (2015), 1071–1084.Search in Google Scholar
[12] Estaji, A. A.—Karimi Feizabadi, A.—Robat Sarpoushi, M.: zc-ideals and prime ideals in ring 𝓡c(L), Filomat 32 (2018), 6741–6752.Search in Google Scholar
[13] Estaji, A. A.—Robat Sarpoushi, M.: Locally functionally countable subalgebra of 𝓡(L), Arch. Math. (Brno) 56 (2020), 127–140.Search in Google Scholar
[14] Estaji, A. A.—Robat Sarpoushi, M.—Elyasi, M.: Further thoughts on the ring 𝓡c(L) in frames, Algebra Universalis 80 (2019), Art. No. 43.Search in Google Scholar
[15] Estaji, A. A.—Taha, M.: The clean elements of the ring 𝓡(L) and 𝓒c(L), Algebra Universalis 80(4) (2019), 1–14.Search in Google Scholar
[16] Estaji, A. A.—Taha, M.: Cozero part of the pointfree vertion of 𝓒c(L), Czechoslovak Math. J., accepted.Search in Google Scholar
[17] Ghadermazi, M.—Karamzadeh, O. A. S.—Namdari, M.: On the functionally countable subalgebra of C(X), Rend. Sem. Mat. Univ. Padova 129 (2013), 47–69.Search in Google Scholar
[18] Gillman, L.—Jerison, M.: Rings of Continuous Functions, Springer-Verlag, 1976.Search in Google Scholar
[19] Henriksen, M.—Jerison, M.: The space of minimal prime ideals of a commutative ring, Trans. Amer. Math. Soc. 115 (1965), 110–130.Search in Google Scholar
[20] Johnstone, P. T.: Stone Spaces, Cambridge Univ. Press, Cambridge, 1982.Search in Google Scholar
[21] Karamzadeh, O. A. S.—Rostami, M.: On the intrinsic topology and some related ideals of C(X), Proc. Amer. Math. Soc. 93(1) (1985), 179–184.Search in Google Scholar
[22] Karamzadeh, O. A. S.—Namdari, M.—Soltanpour, S.: On the locally functionally countable subalgebra of C(X), Appl. Gen. Topol. 16 (2015), 183–207.Search in Google Scholar
[23] Karimi Feizabadi, A.—Estaji, A. A.—Robat Sarpoushi, M.: Pointfree version of image of real-valued continuous functions, Categ. Gen. Algebr. Struct. Appl. 9(1) (2018), 59–75.Search in Google Scholar
[24] Mehri, R.—Mohamadian, R.: On the locally countable subalgebra of C(X) whose local domain is cocountable, Hacet. J. Math. Stat. 46(6) (2017), 1053–1068.Search in Google Scholar
[25] Namdari, M.—Veisi, A.: Rings of quotients of the subalgebra of C(X) consisting of functions with countable image, Inter. Math. Forum 7 (2012), 561–571.Search in Google Scholar
[26] Sharp, R. Y.: Steps in Commutative Algebra, Cambridge Univ. Press, 2000.Search in Google Scholar
[27] Taha, M.—Estaji, A. A.—Robat Sarpoushi, M.: On the regularity of 𝓒c(L), 53-nd Annual Iranian Mathematics Conference University of Science, September 5-8, Technology of Mazandaran, 2022.Search in Google Scholar
© 2024 Mathematical Institute Slovak Academy of Sciences
Articles in the same Issue
- Prof. RNDr. Gejza Wimmer, DrSc. – 3/4 C?
- On hyper (r, q)-Fibonacci polynomials
- The pointfree version of 𝓒c(X) via the ranges of functions
- On the x-coordinates of Pell equations that are products of two Pell numbers
- Subordination properties and coefficient problems for a novel class of convex functions
- Certain radii problems for 𝓢∗(ψ) and special functions
- On direct and inverse Poletsky inequalities with a tangential dilatation
- Fourth-order nonlinear strongly non-canonical delay differential equations: new oscillation criteria via canonical transform
- Hermite interpolation of type total degree associated with certain spaces of polynomials
- Decomposition in direct sum of seminormed vector spaces and Mazur–Ulam theorem
- A fixed point technique to the stability of Hadamard 𝔇-hom-der in Banach algebras
- Compact subsets of Cλ,u(X)
- Variations of star selection principles on hyperspaces
- On lower density operators
- Gröbner bases in the mod 2 cohomology of oriented Grassmann manifolds G͠2t,3
- On the von Bahr–Esseen inequality for pairwise independent random vectors in Hilbert spaces with applications to mean convergence
- Large deviations for some dependent heavy tailed random sequences
- Metric, stratifiable and uniform spaces of G-permutation degree
- In memory of Paolo
Articles in the same Issue
- Prof. RNDr. Gejza Wimmer, DrSc. – 3/4 C?
- On hyper (r, q)-Fibonacci polynomials
- The pointfree version of 𝓒c(X) via the ranges of functions
- On the x-coordinates of Pell equations that are products of two Pell numbers
- Subordination properties and coefficient problems for a novel class of convex functions
- Certain radii problems for 𝓢∗(ψ) and special functions
- On direct and inverse Poletsky inequalities with a tangential dilatation
- Fourth-order nonlinear strongly non-canonical delay differential equations: new oscillation criteria via canonical transform
- Hermite interpolation of type total degree associated with certain spaces of polynomials
- Decomposition in direct sum of seminormed vector spaces and Mazur–Ulam theorem
- A fixed point technique to the stability of Hadamard 𝔇-hom-der in Banach algebras
- Compact subsets of Cλ,u(X)
- Variations of star selection principles on hyperspaces
- On lower density operators
- Gröbner bases in the mod 2 cohomology of oriented Grassmann manifolds G͠2t,3
- On the von Bahr–Esseen inequality for pairwise independent random vectors in Hilbert spaces with applications to mean convergence
- Large deviations for some dependent heavy tailed random sequences
- Metric, stratifiable and uniform spaces of G-permutation degree
- In memory of Paolo