The spectrum of a general singular operator

1978 ◽  
Vol 29 (3) ◽  
pp. 327-329
Author(s):  
V. V. Shevchik
Keyword(s):  
1994 ◽  
Vol 1 (4) ◽  
pp. 395-403
Author(s):  
G. Khuskivadze ◽  
V. Paatashvili

2017 ◽  
Vol 19 (03) ◽  
pp. 1650029 ◽  
Author(s):  
Petru Jebelean ◽  
Jean Mawhin ◽  
Călin Şerban

We prove the existence of at least [Formula: see text] geometrically distinct [Formula: see text]-periodic solutions for a differential inclusions system of the form [Formula: see text] Here, [Formula: see text] is a monotone homeomorphism, [Formula: see text] is periodic with respect to each component of the second variable and [Formula: see text] stands for the generalized Clarke gradient of [Formula: see text] at [Formula: see text]. The monotonicity assumptions on [Formula: see text] highlight the vector [Formula: see text]-Laplacian as being the prototype differential operator. The main interesting feature of this approach is that it also provides a useful framework to treat the case of the [Formula: see text]-relativistic singular operator.


2020 ◽  
Vol 547 ◽  
pp. 123860 ◽  
Author(s):  
Amin Jajarmi ◽  
Abdullahi Yusuf ◽  
Dumitru Baleanu ◽  
Mustafa Inc

1973 ◽  
Vol 18 (4) ◽  
pp. 747-759
Author(s):  
E. Golowich
Keyword(s):  

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