|
Some fixed point theorems for composites of acyclic maps
Authors:
Sehie Park, S. P. Singh and Bruce Watson
Journal:
Proc. Amer. Math. Soc. 121 (1994), 1151-1158
MSC:
Primary 47H10; Secondary 47H19, 54C60, 54H25
MathSciNet review:
1189547
Full-text PDF Free Access
Abstract |
References |
Similar Articles |
Additional Information
Abstract: We obtain fixed point theorems for a new class of multifunctions containing compact composites of acyclic maps defined on a convex subset of a locally convex Hausdorff topological vector space. Our new results are applied to approximatively compact, convex sets or to Banach spaces with the Oshman property.
- [1]
H.
Ben-El-Mechaiekh, The coincidence problem for compositions of
set-valued maps, Bull. Austral. Math. Soc. 41 (1990),
no. 3, 421–434. MR 1071044
(91h:47060), http://dx.doi.org/10.1017/S000497270001830X
- [2]
Hichem
Ben-El-Mechaiekh and Paul
Deguire, Approximation of nonconvex set-valued maps, C. R.
Acad. Sci. Paris Sér. I Math. 312 (1991),
no. 5, 379–384 (English, with French summary). MR 1096616
(92d:54058)
- [3]
Hichem
Ben-El-Mechaiekh and Paul
Deguire, General fixed point theorems for nonconvex set-valued
maps, C. R. Acad. Sci. Paris Sér. I Math. 312
(1991), no. 6, 433–438 (English, with French summary). MR 1096627
(92d:54059)
- [4]
Felix
E. Browder, The fixed point theory of multi-valued mappings in
topological vector spaces, Math. Ann. 177 (1968),
283–301. MR 0229101
(37 #4679)
- [5]
Felix
E. Browder, On a sharpened form of the Schauder fixed-point
theorem, Proc. Nat. Acad. Sci. U.S.A. 74 (1977),
no. 11, 4749–4751. MR 0463982
(57 #3920)
- [6]
Felix
E. Browder, Coincidence theorems, minimax theorems, and variational
inequalities, Conference in modern analysis and probability (New
Haven, Conn., 1982), Contemp. Math., vol. 26, Amer. Math. Soc.,
Providence, RI, 1984, pp. 67–80. MR 737389
(85k:47099), http://dx.doi.org/10.1090/conm/026/737389
- [7]
Ky
Fan, Extensions of two fixed point theorems of F. E. Browder,
Math. Z. 112 (1969), 234–240. MR 0251603
(40 #4830)
- [8]
Lech
Górniewicz and Andrzej
Granas, Some general theorems in coincidence theory. I, J.
Math. Pures Appl. (9) 60 (1981), no. 4,
361–373. MR
646365 (83d:55005)
- [9]
L. Górniewicz and A. Granas, Topology of morphisms and fixed point problems for set-valued mappings, Fixed Point Theory and Applications (M. A. Théra and J. B. Baillon, eds.), Longman Sci. Tech., Essex, 1991, pp. 173-191.
- [10]
Andrzej
Granas and Fon
Che Liu, Coincidences for set-valued maps and minimax
inequalities, J. Math. Pures Appl. (9) 65 (1986),
no. 2, 119–148. MR 867668
(88d:54062)
- [11]
C.
J. Himmelberg, Fixed points of compact multifunctions, J.
Math. Anal. Appl. 38 (1972), 205–207. MR 0303368
(46 #2505)
- [12]
Marc
Lassonde, On the use of KKM multifunctions in fixed point theory
and related topics, J. Math. Anal. Appl. 97 (1983),
no. 1, 151–201. MR 721236
(84k:47049), http://dx.doi.org/10.1016/0022-247X(83)90244-5
- [13]
Marc
Lassonde, Fixed points for Kakutani factorizable
multifunctions, J. Math. Anal. Appl. 152 (1990),
no. 1, 46–60. MR 1072927
(91h:47062), http://dx.doi.org/10.1016/0022-247X(90)90092-T
- [14]
Marc
Lassonde, Réduction du cas multivoque au cas univoque dans
les problèmes de coïncidence, Fixed point theory and
applications (Marseille, 1989) Pitman Res. Notes Math. Ser.,
vol. 252, Longman Sci. Tech., Harlow, 1991, pp. 293–302
(French, with English summary). MR 1122836
(92h:47086)
- [15]
Sehie
Park, Fixed point theorems on compact convex sets in topological
vector spaces, Fixed point theory and its applications (Berkeley, CA,
1986) Contemp. Math., vol. 72, Amer. Math. Soc., Providence, RI,
1988, pp. 183–191. MR 956491
(89i:47111), http://dx.doi.org/10.1090/conm/072/956491
- [16]
Sehie
Park, Some coincidence theorems on acyclic multifunctions and
applications to KKM theory, Fixed point theory and applications
(Halifax, NS, 1991) World Sci. Publ., River Edge, NJ, 1992,
pp. 248–277. MR 1190044
(93j:47087)
- [17]
Sehie
Park, Fixed point theory of multifunctions in topological vector
spaces, J. Korean Math. Soc. 29 (1992), no. 1,
191–208. MR 1157308
(93e:47079)
- [18]
Sehie
Park, Cyclic coincidence theorems for acyclic multifunctions on
convex spaces, J. Korean Math. Soc. 29 (1992),
no. 2, 333–339. MR 1180660
(93j:47088)
- [19]
Michael
J. Powers, Lefschetz fixed point theorems for a new class of
multi-valued maps, Pacific J. Math. 42 (1972),
211–220. MR 0334189
(48 #12508)
- [20]
Simeon
Reich, Approximate selections, best approximations, fixed points,
and invariant sets, J. Math. Anal. Appl. 62 (1978),
no. 1, 104–113. MR 0514991
(58 #24180)
- [21]
Simeon
Reich, Fixed point theorems for set-valued mappings, J. Math.
Anal. Appl. 69 (1979), no. 2, 353–358. MR 538223
(80k:47068), http://dx.doi.org/10.1016/0022-247X(79)90148-3
- [22]
Ivan
Singer, Some remarks on approximative compactness, Rev.
Roumaine Math. Pures Appl. 9 (1964), 167–177. MR 0178450
(31 #2707)
- [1]
- H. Ben-El-Mechaiekh, The coincidence problem for compositions of set-valued maps, Bull. Austral. Math. Soc. 41 (1990), 421-434. MR 1071044 (91h:47060)
- [2]
- H. Ben-El-Mechaiekh and P. Deguire, Approximation of non-convex set-valued maps, C. R. Acad. Sci. Paris Sér. I Math. 312 (1991), 379-384. MR 1096616 (92d:54058)
- [3]
- -, General fixed point theorems for non-convex set-valued maps, C. R. Acad. Sci. Paris Sér. I Math. 312 (1991), 433-438. MR 1096627 (92d:54059)
- [4]
- F. E. Browder, The fixed point theory of multi-valued mappings in topological vector spaces, Math. Ann. 177 (1968), 283-301. MR 0229101 (37:4679)
- [5]
- -, On a sharpened form of the Schauder fixed point theorem, Proc. Nat. Acad. Sci. U.S.A. 74 (1977), 4749-4751. MR 0463982 (57:3920)
- [6]
- -, Coincidence theorems, minimax theorems, and variational inequalities, Contemp. Math., vol. 26, Amer. Math. Soc., Providence, RI, 1984, pp. 67-80. MR 737389 (85k:47099)
- [7]
- K. Fan, Extensions of two fixed point theorems of F. E. Browder, Math. Z. 112 (1969), 234-240. MR 0251603 (40:4830)
- [8]
- L. Górniewicz and A. Granas, Some general theorems in coincidence theory. I, J. Math. Pures Appl. (9) 60 (1981), 361-373. MR 646365 (83d:55005)
- [9]
- L. Górniewicz and A. Granas, Topology of morphisms and fixed point problems for set-valued mappings, Fixed Point Theory and Applications (M. A. Théra and J. B. Baillon, eds.), Longman Sci. Tech., Essex, 1991, pp. 173-191.
- [10]
- A. Granas and F.-C. Liu, Coincidences for set-valued maps and minimax inequalities, J. Math. Pures Appl. (9) 65 (1986), 119-148. MR 867668 (88d:54062)
- [11]
- C. J. Himmelberg, Fixed points of compact multifunctions, J. Math. Anal. Appl. 38 (1972), 205-207. MR 0303368 (46:2505)
- [12]
- M. Lassonde, On the use of KKM-multifunctions in fixed point theory and related topics, J. Math. Anal. Appl. 97 (1983), 151-201. MR 721236 (84k:47049)
- [13]
- -, Fixed points for Kakutani factorizable multifunctions, J. Math. Anal. Appl. 152 (1990), 46-60. MR 1072927 (91h:47062)
- [14]
- -, Réduction du cas multivoque au cas univoque dans les problèmes de coincidence, Fixed Point Theory and Applications (M. A. Théra and J. B. Baillon, eds.), Longman Sci. Tech., Essex, 1991, pp. 293-302. MR 1122836 (92h:47086)
- [15]
- S. Park, Fixed point theorems on compact convex sets in topological vector spaces, Contemp. Math., vol. 72, Amer. Math. Soc., Providence, RI, 1988, pp. 183-191. MR 956491 (89i:47111)
- [16]
- -, Some coincidence theorems on acyclic multifunctions and applications to KKM theory, Proc 2nd Int. Conf. on Fixed Point Theory and Applications (Halifax, June 9-14, 1991) (K.-K. Tan, ed.), World Scientific, River Edge, NJ, 1992, pp. 248-277. MR 1190044 (93j:47087)
- [17]
- -, Fixed point theory of multifunctions in topological vector spaces, J. Korean Math. Soc. 29 (1992), 191-208. MR 1157308 (93e:47079)
- [18]
- -, Cyclic coincidence theorems for acyclic multifunctions on convex spaces, J. Korean Math. Soc. 29 (1992), 333-339. MR 1180660 (93j:47088)
- [19]
- M. J. Powers, Lefschetz fixed point theorems for a new class of multi-valued maps, Pacific J. Math. 42 (1972), 211-220. MR 0334189 (48:12508)
- [20]
- S. Reich, Approximate selections, best approximations, fixed points, and invariant sets, J. Math. Anal. Appl. 62 (1978), 104-113. MR 0514991 (58:24180)
- [21]
- -, Fixed point theorems for set-valued mappings, J. Math. Anal. Appl. 69 (1978), 353-358. MR 538223 (80k:47068)
- [22]
- I. Singer, Some remarks on approximative compactness, Rev. Roumaine Math. Pures Appl. 9 (1964), 167-177. MR 0178450 (31:2707)
Similar Articles
Retrieve articles in Proceedings of the American Mathematical Society
with MSC:
47H10,
47H19,
54C60,
54H25
Retrieve articles in all journals
with MSC:
47H10,
47H19,
54C60,
54H25
Additional Information
DOI:
http://dx.doi.org/10.1090/S0002-9939-1994-1189547-8
PII:
S 0002-9939(1994)1189547-8
Keywords:
Acyclic map,
approximatively compact,
Kakutani factorizable multifunction,
coincidence point
Article copyright:
© Copyright 1994 American Mathematical Society
|