Δημοσιεύσεις:
1. Ε. Ταχτσής (με Κ. Κερεμίδη), On the extensibility of closed filters in T1 spaces and the existence of well orderable filter bases, Commentationes Math. Universitatis Carolinae, 40 (2), (1999), 343-353.
2. Ε. Ταχτσής (με Κ. Κερεμίδη), Non-constructive properties of well-ordered T2 topological spaces, Notre Dame Journal of Formal Logic, 40 (4), (1999), 548-553.
3. Ε. Ταχτσής (με Κ. Κερεμίδη), On Lindelöf Metric Spaces and Weak Forms of the Axiom of Choice, Mathematical Logic Quarterly, 46 (1), (2000), 35-44.
4. Ε. Ταχτσής (με Κ. Κερεμίδη), Compact Metric Spaces and Weak Forms of the Axiom of Choice, Mathematical Logic Quarterly, 47 (1), (2001), 117-128.
5. Ε. Ταχτσής (με P. Howard, Κ. Κερεμίδη, J. E. Rubin και A. Stanley), Non-constructive properties of the real numbers, Mathematical Logic Quarterly, 47 (3), (2001), 423-431.
6. Ε. Ταχτσής (με Κ. Κερεμίδη), Some weak forms of the axiom of choice restricted to the real line, Mathematical Logic Quarterly, 47 (3), (2001), 413-422.
7. Ε. Ταχτσής (με Κ. Κερεμίδη), On Loeb and weakly Loeb Hausdorff spaces, Scientiae Mathematicae Japonicae, 53 (2), (2001), 247-251.
8. Ε. Ταχτσής, Disasters in Metric Topology without Choice, Commentationes Math. Universitatis Carolinae, 43 (1), (2002), 165-174.
9. Ε. Ταχτσής (με H. Herrlich και Κ. Κερεμίδη), Striking Differences between ZF and ZF + Weak Choice in view of Metric Spaces, Quaestiones Mathematicae 25 (2002), 405-420.
10. Ε. Ταχτσής (με Κ. Κερεμίδη), Choice principles for special subsets of the real line, Math. Logic Quarterly, 49 (5), (2003), 444-454.
11. Ε. Ταχτσής (με Κ. Κερεμίδη), On sequentially compact subspaces of R without the axiom of choice, Notre Dame Journal of Formal Logic Vol. 44, No. 3 (2003), 175-184.
12. Ε. Ταχτσής (με Κ. Κερεμίδη), Topology in the absence of the axiom of choice, Scientiae Mathematicae Japonicae, 59, No. 2 (2004), 357-406.
13. Ε. Ταχτσής (με Κ. Κερεμίδη), Countable Sums and Products of Metrizable Spaces in ZF, Math. Logic Quarterly, Vol. 51, No.1 (2005), 95-103.
14. Ε. Ταχτσής (με Κ. Κερεμίδη), Weak Axioms of Choice for Metric Spaces, Proceedings of the American Mathematical Society, 133 (2005), no.12, 3691-3701.
15. Ε. Ταχτσής (με H. Herrlich και Κ. Κερεμίδη), Countable Sums and Products of Loeb and Selective Metric Spaces, Commentationes Math. Universitatis Carolinae, 46, No. 2 (2005), 373-384.
16. Ε. Ταχτσής (με O. De la Cruz, E. Hall, P. Howard και Κ. Κερεμίδη), Properties of the Real Line and Weak Forms of the Axiom of Choice, Math. Logic Quarterly, Vol. 51, 6 (2005), 598-609.
17. Ε. Ταχτσής (με Κ. Κερεμίδη), Countable compact Hausdorff spaces need not be metrizable in ZF, Proceedings of the American Mathematical Society 135 (2007), no. 4, 1205-1211.
18. Ε. Ταχτσής, (με Κ. Κερεμίδη και Ε. Φελουζή) Countable Compact Scattered T2 Spaces and Weak Forms of AC, Bulletin of the Polish Academy of Sciences, Vol. 54, No. 1 (2006), 75-84.
19. Ε. Ταχτσής (με H. Herrlich), On the number of Russell's socks or 2+2+2+… = ?, Commentationes Math. Univ. Carolinae, 47, 4 (2006) 707-717.
20. Ε.Ταχτσής, (με Κ. Κερεμίδη και Ε. Φελουζή), On the Compactness and Countable Compactness of 2R in ZF, Bull. Polish Acad. Sci. Math. 55 (2007), 293-302.
21. Ε. Ταχτσής, An Independence Result Concerning Russell-Cardinals, Quaestiones Mathematicae 31 (2008), 173-177.
22. Ε. Ταχτσής (με H. Herrlich, Κ. Κερεμίδη), Tychonoff Products of Super Second Countable and Super Separable Metric Spaces, Cahiers Topologie Geom. Differentielle Categoriques 49 (2008), 267-279.
23. Ε. Ταχτσής (με H. Herrlich, Κ. Κερεμίδη), Οn Super Second Countable and Super Separable Metric Spaces, Topology Proceedings 33 (2009), 239-249.
24. Ε. Ταχτσής (με Κ. Κερεμίδη), Different versions of a first countable space without choice, Topology and its Applications 156 (2009), 2000-2004.
25. Ε. Ταχτσής (με H. Herrlich), Odd-Sized Partitions of Russell-Sets, Math. Logic Quart. Vol. 56 No. 2 (2010), 185-190.
26. Ε. Ταχτσής (με H. Herrlich, K. Κερεμίδη), On Russell and anti Russell-cardinals, Quaestiones Math. Vol. 33 (2010), 1-9.
27. Ε. Ταχτσής (με Κ. Κερεμίδη), Products of some special compact spaces and restricted forms of AC, The Journal of Symbolic Logic Vol. 75 Issue 3 (2010), 996-1006.
28. Ε. Ταχτσής, On the Set-Theoretic Strength of Countable Compactness of the Tychonoff Product 2R, Bulletin of the Polish Academy of Sciences Mathematics Vol. 58 No. 2 (2010), 91-107
29. Ε. Ταχτσής (με Κ. Κερεμίδη), Extensions of Compactness of Tychonoff Powers of 2 in ZF, Topology Proceedings 37 (2011), 15-31.
30. Ε. Ταχτσής (με H. Herrlich, P. Howard), The cardinal inequality a2<2a, Quaestiones Math., 34(1) (2011), 35-66.
31. Ε. Ταχτσής (με H. Herrlich, K. Kερεμίδη), Remarks on the Stone spaces of the integers and the reals without AC, Bulletin of the Polish Academy of Sciences Mathematics 59 No.2 (2011), 101-114.
32. Ε. Ταχτσής, BPI is equivalent to compactness-n, n>= 6, of Tychonoff powers of 2, Topology Proceedings Vol. 40 (2012), 21-28.
33. Ε. Ταχτσής (με H. Herrlich, P. Howard), On Special Partitions of Dedekind- and Russell-Sets, Comment. Math. Univ. Carolinae 53, 1 (2012), 105-122.
34. Ε. Ταχτσής (με E. J. Hall, Κ. Κερεμίδη), The existence of free ultrafilters on ω does not imply the extension of filters on ω to ultrafilters, Math. Logic Quarterly,59 Issue 4-5 (2013), 258-267.
35. Ε. Ταχτσής (με P. Howard), On Vector Spaces Over Specific Fields Without Choice, Math. Logic Quarterly, 59, Νο. 3 (2013), 128-146.
36. Ε. Ταχτσής (με K. Κερεμίδη), Wallman Compactifications and Tychonoff’s Compactness Theorem in ZF, Topology Proceedings 42 (2013), 275-297.
37. Ε. Ταχτσής (με P. Howard), On a topological choice principle by Murray Bell, Topology and its Applications, Elsevier, 160, Issue 2 (2013), 309-327.
38. Ε. Ταχτσής (με P. Howard), On a variant of Rado's selection lemma and its equivalence with the Boolean prime ideal theorem, Archive for Mathematical Logic, Springer, 53, Issue 7 (2014), 825-833.
39. Ε. Ταχτσής, Variants of the Principle of Dependent Choices and a Topological Proposition, Questions and Answers in General Topology, Part A (Answers), 32 (2014), 53-62.
40. Ε. Ταχτσής (με P. Howard), On the Minimal Cover Property in ZF, Topology and its Applications, Elsevier, 173 (2014), 94-106.
41. Ε. Ταχτσής, On the Existence of Free Ultrafilters on ω and on Russell-sets in ZF, Bulletin Polish Acad. Sci. Math. 63 No.1 (2015), 1-10.
42. Ε. Ταχτσής (με H. Herrlich και P. Howard), On a Certain Notion of Finite and a Finiteness Class in Set Theory without Choice, Bulletin of the Polish Academy of Sciences, Mathematics Vol. 63, No. 2 (2015), 89-112.
43. Ε. Ταχτσής (με P. Howard), On rigid relation principles in set theory without the axiom of choice, Fundamenta Mathematicae 232 No.3 (2016), 199-226.
44. Ε. Ταχτσής (με H. Herrlich και P. Howard), Finiteness Classes and Small Violations of Choice, Notre Dame Journal of Formal Logic 57, Number 3 (2016), 375-388.
45. Ε. Ταχτσής (με P. Howard και D. I. Saveliev), On the set-theoretic strength of the existence of disjoint cofinal sets in posets without maximal elements, Math. Logic Quarterly (Wiley-VCH) 62, Issue 3 (2016), 155-176.
46. Ε. Ταχτσής (με P. Howard), No Decreasing Sequence of Cardinals, Archive for Mathematical Logic (Springer) 55, Issue 3-4 (2016), 415-429.
47. Ε. Ταχτσής (με P. Howard), On the set-theoretic strength of the n-compactness of generalized Cantor cubes, Fundamenta Mathematicae 234 (2016), 241-252.
48. Ε. Ταχτσής, On Martin’s Axiom and Forms of Choice, Mathematical Logic Quarterly (Wiley-VCH) 62, Issue 3 (2016), 190-203.
49.
Ε.
Ταχτσής,
On Ramsey’s Theorem and the existence of infinite chains or infinite
anti-chains in infinite posets, The Journal of Symbolic Logic
(Cambridge University Press) 81, Issue 01 (2016), 384 – 394.
50.
Ε. Ταχτσής,
On variants of the principle of consistent choices, the minimal cover property and the 2-compactness of generalized Cantor cubes, Topology and its Applications (Elsevier) 219 (2017), 122-140.
52. Ε. Ταχτσής (με P. Howard), On Infinite-Dimensional Banach Spaces and Weak Forms of the Axiom of Choice, Mathematical Logic Quarterly 63 (2017), 509-535.
53. Ε. Ταχτσής (με M. Di Nasso), Idempotent ultrafilters without Zorn’s Lemma, Proceedings of the American Mathematical Society 146 (2018), no. 1, 397-411.
54. Ε. Ταχτσής, On the Minimal Cover Property and Certain Notions of Finite, Archive for Mathematical Logic (Springer) 57 (2018), no. 5-6, 665-686.
55. Ε. Ταχτσής, A Note on the Deductive Strength of the Nielsen-Schreier Theorem, Mathematical Logic Quarterly (Wiley-VCH) 64 (2018), no. 3, 173-177.
56. Ε. Ταχτσής, On the comparability of cardinals in the absence of the Axiom of Choice, Fundamenta Mathematicae 242 (2018), no. 3, 247-266.
57. Ε. Ταχτσής, On the set-theoretic strength of Ellis’ Theorem and the existence of free idempotent ultrafilters on ω, The Journal of Symbolic Logic 83 (2018), no. 2, 551-571.
58. Ε. Ταχτσής, On certain non-constructive properties of infinite-dimensional vector spaces, Commentationes Mathematicae Universitatis Carolinae 59, 3 (2018), 285-309.
59. Ε. Ταχτσής, Łoś’s theorem and the axiom of choice, Mathematical Logic Quarterly (Wiley-VCH) 65, No. 3 (2019), 280-292.
60. Ε. Ταχτσής, On the existence of permutations of infinite sets without fixed points in set theory without choice, Acta Mathematica Hungarica (Springer) 157 (2) (2019), 281-300.
61. Ε. Ταχτσής, On H-closed and Minimal Hausdorff Spaces and the Boolean Prime Ideal Theorem, Topology Proceedings 53 (2019), 255-268.
62. Ε. Ταχτσής, Dilworth's decomposition theorem for posets in ZF, Acta Mathematica Hungarica (Springer) 159 (2) (2019), 603-617.
63. Ε. Ταχτσής, The Urysohn Lemma is independent of ZF + Countable Choice, Proceedings of the American Mathematical Society 147, Number 9 (2019), 4029-4038.
64. Ε. Ταχτσής, On the existence of almost disjoint and MAD families without AC, Bulletin of the Polish Academy of Sciences, Mathematics 67, No. 2 (2019), 101-124.
65. Ε. Ταχτσής, On ultracompact spaces in ZF, Topology and its Applications (Elsevier) 263 (2019), 257-278.
66. Ε. Ταχτσής, Infinite Hausdorff spaces may lack cellular families or discrete subsets of cardinality $\aleph_{0}$, Topology and its Applications (Elsevier) 275 (2020), 106997, 19pp.
67. Ε. Ταχτσής (με Κ. Κερεμίδη), Cellularity of Infinite Hausdorff Spaces in ZF, Topology and its Applications (Elsevier) 274 (2020), 107104, 20pp.
68. Ε. Ταχτσής (με L. Halbeisen), On Ramsey Choice and Partial Choice for infinite families of n-element sets, Archive for Mathematical Logic (Springer) 59 (2020), 583-606.
69. Ε. Ταχτσής (με P. Howard), On the set-theoretic strength of a topological Banach fixed point theorem for continua, Topology Proceedings 55 (2020), 295-313.
70. Ε. Ταχτσής, Juh\'{a}sz's topological generalization of Neumer's theorem may fail in ZF, Proceedings of the American Mathematical Society 148 (2020), no. 3, 1295-1310.
71. Ε. Ταχτσής, The Boolean prime ideal theorem does not imply the extension of almost disjoint families to MAD families, Bulletin of the Polish Academy of Sciences, Mathematics 68, No. 2 (2020), 105-115.
72. Ε. Ταχτσής (με P. Howard), On metrizability and compactness of certain products without the Axiom of Choice, Topology and its Applications (Elsevier) 290 (2021), 107591.
73. Ε. Ταχτσής (με Κ. Κερεμίδη και E. Wajch), Second-countable compact Hausdorff spaces as remainders in ZF and two new notions of infiniteness, Topology and its Applications (Elsevier) 298 (2021), 107732.
74. Ε. Ταχτσής (με Κ. Κερεμίδη και E. Wajch), Several results on compact metrizable spaces in ZF, Monatshefte für Mathematik (Springer) 196 (2021), 67-102.
75. Ε. Ταχτσής, MA($\aleph_{0}$) restricted to complete Boolean algebras and choice, Mathematical Logic Quarterly (Wiley-VCH) 67, No. 4 (2021), 420-431.
76. Ε. Ταχτσής (με J. Hejduk και E. Wajch), On Urysohn's Lemma for Generalized Topological Spaces in ZF, Results in Mathematics (Springer/Birkhäuser) 77 (2022), 19pp.
77. Ε. Ταχτσής, On the interrelation of a theorem of Juh\'{a}sz and certain weak axioms of choice, Fundamenta Mathematicae 256, no. 3 (2022), 261-283.
78. Ε. Ταχτσής, Almost Disjoint and MAD Families in Vector Spaces and Choice Principles, The Journal of Symbolic Logic (Cambridge) 87, No. 3 (2022), 1093-1110.
79. Ε. Ταχτσής, Some independence results about compact metrizable spaces and two notions of finiteness, Topology and its Applications (Elsevier) 307 (2022), 107947.
80. Ε. Ταχτσής (με Κ. Κερεμίδη), Stranger things about the cardinality of compact metric spaces without AC, Acta Mathematica Hungarica (Springer) 168, no. 1 (2022), 269-294.
81. Ε. Ταχτσής, Hindman's Theorem and Choice, Acta Mathematica Hungarica (Springer) 168, no. 2 (2022), 402-424.
82. Ε. Ταχτσής, On a theorem of Kurepa for partially ordered sets and weak choice, Monatshefte für Mathematik (Springer) 199, no. 3 (2022), 645-669.
83. Ε. Ταχτσής (με Κ. Κερεμίδη και E. Wajch), Countable products and countable direct sums of compact metrizable spaces in the absence of the Axiom of Choice, Annals of Pure and Applied Logic (Elsevier) 174 (2023), no. 7, 103283, 34pp.
84. Ε. Ταχτσής (με Κ. Κερεμίδη και E. Wajch), On Iso-dense and Scattered Spaces without AC, Results in Mathematics (Springer/Birkhäuser) 78 (2023), no. 4, Paper No. 153, 30pp.
85. Ε. Ταχτσής (με P. Howard), Models of ZFA in which every linearly ordered set can be well ordered, Archive for Mathematical Logic (Springer) 62 (2023), 1131-1157.
86. Ε. Ταχτσής (με Κ. Κερεμίδη), On Hausdorff operators in ZF, Mathematical Logic Quarterly (Wiley-VCH) 69 (2023), 347-369.
87. Ε. Ταχτσής, On Some Open Problems about P-Spaces, Strongly Quasi Baire Spaces and Choice, Results in Mathematics (Springer/Birkhäuser) 79 (2024), Paper No. 19, 24pp.
88. Ε. Ταχτσής, On the deductive strength of the Erdős-Dushnik-Miller theorem and two order-theoretic principles, Monatshefte für Mathematik (Springer) 203 (2024), 677-693.
89. Ε. Ταχτσής, On two theorems of Arens-Dugundji and Scott-Watson-Förster without the Axiom of Choice, δεκτή στο Topology and its Applications (Elsevier).
90. Ε. Ταχτσής, No Decreasing Sequence of Cardinals in the Hierarchy of Choice Principles, Notre Dame Journal of Formal Logic 65 (2024), no. 3, 311-331.
91. Ε. Ταχτσής, Ellis' theorem, minimal left ideals, and minimal/maximal idempotents without AC, Acta Mathematica Hungarica (Springer) 174 (2024), no. 2, 545-569.
92. Ε. Ταχτσής, On free ultrafilters on ω with well-orderable bases in ZF, δεκτή στο The Journal of Symbolic Logic (Cambridge).
93. Ε. Ταχτσής, On consequences of the Countable Union Theorem, their deductive strength and interaction with topology, Fundamenta Mathematicae 268 (2025), no. 3, 235-284.
94. Ε. Ταχτσής, Metric spaces in choiceless set theory, Annals of Pure and Applied Logic (Elsevier) 176 (2025) 103603.
95. Ε. Ταχτσής, Divisibility vs. Strong Divisibility in Set Theory Without AC, δεκτή στο Periodica Mathematica Hungarica (Springer).