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Sun, Longfa
89
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Online (89)
Mediatypes
Articles (Online) (62)
OpenAccess-fulltext (27)
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1
On Extension of Norm-Additive Maps Between the Positive Uni..:
Sun, Longfa
;
Sun, Yinghua
Results in Mathematics. 79 (2024) 3 - p. , 2024
Link:
https://doi.org/10.1007/..
?
2
On a universal inequality for approximate phase isometries:
Dai, Duanxu
;
Que, Haixin
;
Sun, Longfa
.
Acta Mathematica Scientia. 44 (2024) 3 - p. 823-838 , 2024
Link:
https://doi.org/10.1007/..
?
3
On extension of isometries between the positive unit sphere..:
Sun, Longfa
;
Zhang, Yipeng
;
Sun, Yinghua
.
Indian Journal of Pure and Applied Mathematics. , 2024
Link:
https://doi.org/10.1007/..
?
4
On Perturbed Isometries Between the Positive Cones of Certa..:
Sun, Longfa
;
Sun, Yinghua
;
Wang, Shenghua
Results in Mathematics. 78 (2023) 2 - p. , 2023
Link:
https://doi.org/10.1007/..
?
5
More on stability of two functional equations:
Sun, Longfa
;
Dong, Yunbai
Ukrains'kyi Matematychnyi Zhurnal. 75 (2023) 6 - p. 859-868 , 2023
Link:
https://doi.org/10.37863..
?
6
More on Stability of Two Functional Equations:
Sun, Longfa
;
Dong, Yunbai
Ukrainian Mathematical Journal. , 2023
Link:
https://doi.org/10.1007/..
?
7
A note on the Turn$${\check{s}}$$ek theorem:
Sun, Longfa
;
Sun, Yinghua
;
Guo, Yan
.
Indian Journal of Pure and Applied Mathematics. , 2023
Link:
https://doi.org/10.1007/..
?
8
On phase-isometries between the positive cones of continuou..:
Sun, Longfa
;
Sun, Yinghua
;
Dai, Duanxu
Annals of Functional Analysis. 14 (2022) 1 - p. , 2022
Link:
https://doi.org/10.1007/..
?
9
Stability of $$\varepsilon $$-isometries and their symmetri..:
Sun, Longfa
Aequationes mathematicae. 97 (2022) 2 - p. 355-375 , 2022
Link:
https://doi.org/10.1007/..
?
10
Hyers–Ulam stability of $$\varepsilon $$-isometries between..:
Sun, Longfa
Results in Mathematics. 77 (2021) 1 - p. , 2021
Link:
https://doi.org/10.1007/..
?
11
Stability of symmetric $$\varepsilon $$-isometries on wedge:
Sun, Longfa
Indian Journal of Pure and Applied Mathematics. 52 (2021) 1 - p. 11-21 , 2021
Link:
https://doi.org/10.1007/..
?
12
A note on the stability of isometries on the positive cones..:
Sun, Longfa
Indian Journal of Pure and Applied Mathematics. 52 (2021) 1 - p. 265-273 , 2021
Link:
https://doi.org/10.1007/..
?
13
A note on stability of non-surjective $$\varepsilon$$-isome..:
Sun, Longfa
Indian Journal of Pure and Applied Mathematics. 52 (2021) 4 - p. 1085-1092 , 2021
Link:
https://doi.org/10.1007/..
?
14
On the Symmetrizations of $$\varepsilon$$-Isometries on Pos..:
Sun, Longfa
Functional Analysis and Its Applications. 55 (2021) 1 - p. 75-79 , 2021
Link:
https://doi.org/10.1134/..
?
15
On non-linear $$\varepsilon$$-isometries between the positi..:
Sun, Longfa
Annals of Functional Analysis. 12 (2021) 4 - p. , 2021
Link:
https://doi.org/10.1007/..
1-15