Klaus Schmitt

Q: What Schools Are Affiliated With Klaus Schmitt

Klaus Schmitt is affiliated with the following schools: Princeton University, Stanford University, University of Nebraska–Lincoln, University of Utah

Klaus Schmitt's AcademicInfluence.com Rankings

Klaus Schmitt

Mathematics

#7654

World Rank

#10385

Historical Rank

#2076

USA Rank

Group Theory

#158

World Rank

#189

Historical Rank

#34

USA Rank

Algebra

#402

World Rank

#552

Historical Rank

#77

USA Rank

Measure Theory

#2590

World Rank

#3104

Historical Rank

#741

USA Rank

mathematics Degrees

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Mathematics

Klaus Schmitt's Degrees

PhD Mathematics Princeton University
Masters Mathematics Stanford University

Why Is Klaus Schmitt Influential?

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According to Wikipedia, Klaus Schmitt is an American mathematician doing research in nonlinear differential equations, and nonlinear analysis. Schmitt completed the Abitur at Rimbach's Martin-Luther-Schule in 1960. He received a BA in mathematics and physics from St. Olaf College in 1962, an MA and PhD in mathematics from the University of Nebraska in 1967. He began his 43-year career at the University of Utah in 1967, first as assistant, then associate, then as full professor of mathematics. He also served as chairman of the department of mathematics from 1989 to 1992.

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Klaus Schmitt's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

On the existence of soliton solutions to quasilinear Schrödinger equations (2002) (430)
Permanence and the dynamics of biological systems. (1992) (340)
The Liouville–Bratu–Gelfand Problem for Radial Operators (2002) (196)
Mountain pass type solutions for quasilinear elliptic equations (2000) (155)
On principal eigenvalues for quasilinear elliptic differential operators: an Orlicz-Sobolev space setting (1999) (143)
On positive solutions of semilinear elliptic equations (1987) (128)
Delay and functional differential equations and their applications : [proceedings] (1972) (97)
Boundary value problems with jumping nonlinearities (1986) (96)
Boundary value problems for quasilinear second order elliptic equations (1978) (84)
Periodic boundary value problems for systems of second order differential equations (1973) (79)
Boundary value problems for infinite systems of second-order differential equations (1975) (72)
Nonzero solutions of boundary value problems for second order ordinary and delay-differential equations (1972) (67)
A class of nonlinear Sturm-Liouville problems with infinitely many solutions (1988) (66)
Positive Solutions of Quasilinear Boundary Value Problems (1998) (63)
Nonlinear eigenvalue problems with the parameter near resonance (1990) (60)
Landesman-Lazer Type Problems At An Eigenvalue Of Odd Multiplicity (1988) (56)
Periodic solutions of nonlinear second order differential equations (1967) (54)
Global Bifurcation in Variational Inequalities: Applications to Obstacle and Unilateral Problems (1997) (49)
On eigenvalue problems for nondifferentiable mappings (1979) (48)
On Boundary Value Problems for Degenerate Quasilinear Elliptic Equations and Inequalities (1998) (47)
THE CONTRACTION MAPPING PRINCIPLE AND SOME APPLICATIONS (2009) (46)
Periodic solutions of systems of second-order differential equations (1972) (45)
Positive solutions of semilinear elliptic boundary value problems (1995) (44)
Nonlinear elliptic boundary value problems versus their finite difference approximations: numerically irrelevant solutions. (1981) (43)
Nonlinear Analysis and Differential Equations An Introduction (2004) (43)
An application of the shooting method to boundary value problems for second order delay equations (1971) (42)
Invariant sets and the hokohara-kneser property for systems of parabolic partial differential equations (1977) (42)
On the existence of maximal and minimal solutions for parabolic partial differential equations (1979) (42)
On the eigenvalue problem for coupled elliptic systems (1986) (41)
Radial Solutions of Quasilinear Elliptic Differential Equations (2004) (38)
Boundary value problems for differential equations with deviating arguments (1969) (37)
Boundary Value Problems for Singular Elliptic Equations (2011) (37)
A multidimensional analogue of the Denjoy-Perron-Henstock-Kurzweil integral (1997) (36)
Global Bifurcation in Variational Inequalities (1997) (36)
Minimization problems for noncoercive functionals subject to constraints. II. (1995) (35)
Positive solutions and conjugate points for systems of differential equations (1978) (35)
Positive radial solutions of quasilinear elliptic partial differential equations on a ball (1999) (35)
Existence of positive solutions for semilinear elliptic equations in annular domains (1994) (35)
Quasilinear Elliptic Equations and Inequalities with Rapidly Growing Coefficients (2000) (33)
Persistence in models of predator-prey populations with diffusion (1986) (33)
Asymptotic behavior of positive solution branches of elliptic problems with linear part at resonance (1992) (32)
On the Number of Solutions of Boundary Value Problems Involving the P-Laplacian (1996) (32)
A nonlinear boundary value problem (1970) (30)
Some general concepts of sub- and supersolutions for nonlinear elliptic problems (2006) (30)
Ambrosetti-Prodi-type problems for quasilinear elliptic problems (2005) (28)
Noncoercive variational inequalities: some applications (1990) (28)
On bifurcation from infinity for potential operators (1991) (28)
Sub-supersolution theorems for quasilinear elliptic problems: A variational approach. (2004) (28)
Boundary value problems for delay-differential equations (1968) (25)
VARIATIONAL INEQUALITIES OF ELLIPTIC AND PARABOLIC TYPE (2002) (25)
Corrigendum: Upper and lower solutions and semilinear second order elliptic equations with non-linear boundary conditions (1985) (24)
Global aspects of the continuous and discrete Newton method: A case study (1988) (23)
Non-linear boundary value problems for systems of differential equations† (1977) (23)
Global analysis of two-parameter elliptic eigenvalue problems (1984) (23)
Some bifurcation results for a class of $p$-Laplacian like operators (1997) (22)
Periodic solutions of some nonlinear delay-differential equations (1980) (21)
A note on periodic solutions for delay-differential systems (1974) (21)
Boundary value problems for second order differential equations in convex subsets of a Banach space (1976) (20)
Nonlinear boundary value problems for systems of differential equations (1983) (19)
Positive Radial Solutions of Some Nonlinear Partial Differential Equations (1997) (19)
Boundary Value Problems and Comparison Theorems for Ordinary Differential Equations (1974) (19)
Bernstein–Nagumo conditions and solutions to nonlinear differential inequalities (2012) (18)
Bifurcation problems associated with generalized Laplacians (2004) (18)
Boundary value problems for nonlinear second order differential equations (1968) (17)
On radial solutions of some semilinear elliptic equations (1988) (17)
A priori bounds for positive solutions of a semilinear elliptic equation (1985) (17)
Period perturbations of linear problems at resonance on convex domains (1990) (17)
Bounded solutions of nonlinear second order differential equations (1969) (16)
Positive and spurious solutions of nonlinear eigenvalue problems (1981) (16)
On Radial Solutions of Quasilinear Boundary Value Problems (1999) (16)
Periodic solutions of hereditary differential systems (1973) (16)
Comparison theorems for second order delay differential equations (1971) (15)
Periodic solutions of delay-differential equations (1979) (15)
Boundary value problems for differential equations with deviating arguments (1969) (14)
Applications of Sub-Supersolution Theorems to Singular Nonlinear Elliptic Problems (2011) (14)
On solutions of nonlinear differential equations with deviating arguments (1969) (13)
A Note on Periodic Solutions of Second Order Ordinary Differential Equations (1971) (13)
On Principal Eigenvalues ofp-Laplacian-like Operators (1996) (13)
Pointwise completeness of differential-difference equations (1973) (13)
Periodic solutions of nonlinear differential systems (1972) (12)
Variational Eigenvalues of Degenerate Eigenvalue Problems for the Weighted p-Laplacian (2005) (12)
Existence of solutions of a nonlinear boundary value problem via the method of lines (1978) (12)
Global topological perturbations of nonlinear elliptic eigenvalue problems (1983) (12)
Boundary Value Problems for Quasilinear Second Order Differential Equations (1996) (11)
REVISITING THE METHOD OF SUB- AND SUPERSOLUTIONS FOR NONLINEAR ELLIPTIC PROBLEMS (2007) (11)
Periodic solutions of a forced nonlinear oscillator involving a onesided restoring force (1978) (11)
Almost Periodic Solutions of Nonlinear Second Order Differential Equations (1992) (11)
On the Boundary Value Problem u + u = αu - + p(t), u(0) = 0 = u(π) (1978) (10)
An Existence Theorem for Periodic Boundary Value Problems for Systems of Second Order Differential Equations (1972) (10)
Fixed Point Theorems of Krasnosel’skii Type In Locally Convex Spaces and Applications to Integral Equations (1994) (10)
On positive solutions of quasilinear elliptic equations (2009) (10)
PERIODIC SOLUTIONS OF LINEAR SECOND ORDER DIFFERENTIAL EQUATIONS WITH DEVIATING ARGUMENT (1970) (9)
Symmetry Breaking in Semilinear Elliptic Problems (1990) (9)
Rothe and altman type coincidence theorems and applications to differential equations (1977) (9)
Periodic Solutions of Functional Differential Equations of Retarded and Neutral Types in Banach Spaces (1995) (7)
Applications of variational equations to ordinary and partial differential equations—Multiple solutions of boundary value problems (1975) (7)
P - Coercive Variational Inequalities and Unilateral Problems for von Karman's Equations (1992) (6)
Periodic solutions of small period of systems of th order differential equations (1972) (6)
On critical points for noncoercive functionals and subharmonic solutions of some Hamiltonian systems (2000) (6)
Applications of variational identities to quasilinear elliptic differential equations (2000) (6)
On the geometry of level sets of positive solutions of semilinear elliptic equations (1988) (5)
Periodic solutions of a class of nonlinear evolution equations (1984) (5)
Newton flows for real equations (1988) (5)
Periodic solutions of second order equations: A variational approach (2004) (5)
On the existence of nontrivial solutions of differential equations subject to linear constraints (2017) (4)
Existence and Uniqueness Results for Nonlinear Boundary Value Problems (1993) (4)
Eigenvalue problems for nonlinear second order differential equations (1975) (4)
On solvability of boundary value problems for systems of differential equations (1987) (4)
Bifurcation from Infinity in Banach Spaces (1997) (4)
Persistence of invariant tori in systems of coupled oscillators. I. Regular and singular problems (1991) (4)
On second-order quadratic systems and algebras (2011) (3)
Fredholm alternatives for nonlinear differential equations (1982) (3)
Nonlinear Elliptic Dirichlet and No-Flux Boundary Value Problems (2012) (3)
On the boundary value problem ”+=⁻+(), (0)=0=() (1978) (3)
FIXED SET THEOREMS FOR DISCRETE DYNAMICS AND NONLINEAR BOUNDARY-VALUE PROBLEMS (2011) (3)
Life Cycle Assessment of a Truck Component - Air Deflection System (1998) (3)
Periodic solutions of systems of ordinary differential equations which approximate delay equations (1988) (2)
Existence of nonnegative solutions for semilinear elliptic equations with subcritical exponents (1995) (2)
On the global existence of solutions of second order ordinary differential equations (1969) (2)
Geometric properties and bounds for positive solutions of semilinear elliptic equations (1987) (2)
On Generalized and Viscosity Solutions of Nonlinear Elliptic Equations (2004) (2)
On the Existence of Nontrivial Solutions to Some Elliptic Variational Inequalities (2002) (2)
Variational Methods for Nonlinear Eigenvalue Inequalities (2)
On minimizing noncoercive functionals on weakly vlosed sets (1996) (2)
Some Auxiliary Results (1997) (1)
Existence of solutions of non-linear Schrödinger equations (1977) (1)
Existence and multiplicity of solutions of some nonlinear equations (1974) (1)
On Quadratic Differential Equations (1994) (1)
Bifurcation problems for second order systems (2020) (1)
SOLUTIONS TO BOUNDARY VALUE PROBLEMS AND PERIODIC SOLUTIONS OF SECOND-ORDER NONLINEAR DIFFERENTIAL EQUATIONS (1967) (1)
On Parabolic Variational Inequalities with Multivalued Terms and Convex Functionals (2018) (1)
MULTIPLICITY OF POSITIVE RADIAL SOLUTIONS OF A QUASILINEAR ELLIPTIC PROBLEM IN A BALL* (2009) (1)
Boundary value problems for higher order nonlinear differential equations (1993) (1)
POSITIVITY, CONTINUATION AND NONLINEAR EIGENVALUE PROBLEMS (2005) (1)
On a Parabolic Variational Inequality Related to a Sandpile Problem (2015) (1)
On the existence of soliton solutions toquasilinear (2007) (0)
Degree Calculations — The Hilbert Space Case (1997) (0)
Bifurcation from Infinity in Hilbert Spaces (1997) (0)
GLOBAL ANALYS1S OF lE10-PARSlVIETEIt ELLIPTIC EIGENVALUE PROBLEMS (2016) (0)
Asymptotics for Solution Branches Of Semilinear Elliptic Problems At Resonance (1992) (0)
BIFURCATION RESULTS FOR EQUATIONS WITH NONDIFFERENTIABLE NONLINEARITIES (1980) (0)
Equadiff 82: Proceedings of the International Conference Held in Wurzburg, Frg, August 23-28, 1982 (1983) (0)
Boundary Value Problems and Asymptotic Behavior for Functional Differential Equations. (1974) (0)
Bifurcation in Hilbert Spaces (1997) (0)
On Generalized and Viscosity Solutions of (2004) (0)
INFINITELY MANY SOLUTIONS AND MORSE INDEX FOR NON-AUTONOMOUS ELLIPTIC PROBLEMS (2019) (0)
TheLiouville^Bratu^GelfandProblemforRadialOperators (2002) (0)
Boundary Value Problems and Periodic Solutions of Nonlinear Ordinary, Functional and Partial Differential Equations (1977) (0)
Method and apparatus for reheating of flue gases (1984) (0)
On a Parabolic Variational Inequality Related to a Sandpile Problem (2013) (0)
Variational Inequalities and the Contact of Elastic Plates (2017) (0)
Nonlinear partial differential equations conference (1988) (0)
Applications of Sub-Supersolution Theorems to Singular (2011) (0)
On the boundary value problem $u”+u=\alpha u\sp{-}+p(t),$ $u(0)=0=u(\pi )$ (1978) (0)
A computer program analysing transients in multistage pumping systems (1980) (0)
Discrete resonance problems subject to periodic forcing (2019) (0)
Bifurcation in Banach Spaces (1997) (0)
Research Description (2005) (0)
Variational Inequalities,Bifurcation and Applications (2001) (0)

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What Schools Are Affiliated With Klaus Schmitt?

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Klaus Schmitt's Degrees

Why Is Klaus Schmitt Influential?

Klaus Schmitt's Published Works

Published Works

Other Resources About Klaus Schmitt

What Schools Are Affiliated With Klaus Schmitt?

Klaus Schmitt's AcademicInfluence.com Rankings