Barbara Keyfitz | Academic Influence

Barbara Keyfitz's AcademicInfluence.com Rankings

Barbara Keyfitz

Mathematics

#2346

World Rank

#3643

Historical Rank

#933

USA Rank

Measure Theory

#3646

World Rank

#4301

Historical Rank

#1051

USA Rank

mathematics Degrees

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Mathematics

Barbara Keyfitz's Degrees

PhD Mathematics New York University
Masters Mathematics New York University

Why Is Barbara Keyfitz Influential?

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According to Wikipedia, Barbara Lee Keyfitz is a Canadian-American mathematician, the Dr. Charles Saltzer Professor of Mathematics at Ohio State University. In her research, she studies nonlinear partial differential equations and associated conservation laws.

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Barbara Keyfitz'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

A system of non-strictly hyperbolic conservation laws arising in elasticity theory (1980) (283)
SPACES OF WEIGHTED MEASURES FOR CONSERVATION LAWS WITH SINGULAR SHOCK SOLUTIONS (1995) (184)
A proof of existence of perturbed steady transonic shocks via a free boundary problem (2000) (147)
The McKendrick partial differential equation and its uses in epidemiology and population study (1997) (132)
A free boundary problem for a quasi‐linear degenerate elliptic equation: Regular reflection of weak shocks (2002) (110)
On Finite-Difference Approximations and Entropy Conditions for Shocks (2015) (97)
Shock Waves and Reaction-Diffusion Equations. (1986) (95)
A QUALITATIVE STUDY OF THE STEADY-STATE SOLUTIONS FOR A CONTINUOUS FLOW STIRRED TANK CHEMICAL REACTOR* (1980) (86)
Nonlinear evolution equations that change type (1990) (83)
Free Boundary Problems for the Unsteady Transonic Small Disturbance Equation: Transonic Regular Reflection (2000) (80)
Free Boundary Problems for Nonlinear Wave Systems: Mach Stems for Interacting Shocks (2006) (78)
A viscosity approximation to a system of conservation laws with no classical Riemann solution (1989) (76)
LACK OF HYPERBOLICITY IN THE TWO-FLUID MODEL FOR TWO-PHASE INCOMPRESSIBLE FLOW (2003) (73)
A strictly hyperbolic system of conservation laws admitting singular shocks (1990) (62)
Self-Similar Solutions for the Triple Point Paradox in Gasdynamics (2008) (56)
Existence and uniqueness of entropy solutions to the Riemann problem for hyperbolic systems of two nonlinear conservation laws (1978) (51)
The Triple Point Paradox for the Nonlinear Wave System (2006) (50)
An Elliptic Problem Arising from the Unsteady Transonic Small Disturbance Equation (1995) (42)
Riemann Problems for the Two-Dimensional Unsteady Transonic Small Disturbance Equation (1998) (36)
STEADY STATE MULTIPLICITY ANALYSIS OF LUMPED-PARAMETER SYSTEMS DESCRIBED BY A SET OF ALGEBRAIC EQUATIONS (1985) (35)
Classification of one-state-variable bifurcation problems up to codimension seven (1986) (33)
The existence of viscous profiles and admissibility for transonic shocks (1991) (32)
A smooth solution for a keldysh type equation (1996) (31)
Hopf-Hopf mode interactions with O(2) symmetry (1986) (28)
The Riemann problem for a class of hyperbolic conservation laws exhibiting a parabolic degeneracy (1983) (28)
Viscous singular shock structure for a nonhyperbolic two-fluid model (2004) (26)
TRANSONIC REGULAR REFLECTION FOR THE NONLINEAR WAVE SYSTEM (2006) (26)
SELF-SIMILAR SOLUTIONS OF TWO-DIMENSIONAL CONSERVATION LAWS (2004) (25)
A singularity theory analysis of a thermal‐chainbranching model for the explosion peninsula (1981) (25)
Change of type in three-phase flow: A simple analogue (1989) (23)
A geometric theory of conservation laws which change type (1995) (23)
ON EIGENVALUE PROBLEMS OF THE p-LAPLACIAN WITH NEUMANN BOUNDARY CONDITIONS (2010) (22)
SINGULAR SHOCKS: RETROSPECTIVE AND PROSPECTIVE (2011) (17)
Mathematical Properties of Nonhyperbolic Models for Incompressible Two-Phase Flow (2000) (14)
ON THE EQUATION (2010) (13)
A geometric study of shocks in equations that change type (1994) (12)
Shocks near the sonic line: a comparison between steady and unsteady models for change of type (1990) (11)
Nonuniform Dependence on Initial Data for Compressible Gas Dynamics: The Cauchy Problem on ℝ2 (2016) (10)
Multiphase saturation equations, change of type and inaccessible regions (1993) (10)
The sonic line as a free boundary (2012) (10)
A useful class of two-dimensional conservation laws (1996) (10)
Conserving the wrong variables in gas dynamics: A Riemann solution with singular shocks (2012) (10)
Bifurcation resulting from changes in domain in a reaction-diffusion equation (1983) (9)
Shock Waves and Reaction-Diffusion Equations. By Joel Smoller (1986) (9)
Nonuniform dependence on initial data for compressible gas dynamics: The periodic Cauchy problem (2016) (9)
Nonstrictly hperbolic conservation laws (1987) (8)
Transonic regular reflection for the unsteady transonic small disturbance equation‚Äîdetails of the subsonic solution (2007) (7)
A CONTINUOUS, TWO-WAY FREE BOUNDARY IN THE UNSTEADY TRANSONIC SMALL DISTURBANCE EQUATIONS (2010) (7)
AN ANALYSIS OF THE LEADING-EDGE SINGULARITY IN TRANSONIC SMALL-DISTURBANCE THEORY (1978) (6)
Prototypes for Nonstrict Hyperbolicity in Conservation Laws (2000) (6)
Weak Shock Reflection Modeled by the Unsteady Transonic Small Disturbance Equation (2001) (6)
ON THE BLOWUP OF ut AT QUENCHING (2010) (6)
Hold that light! Modeling of traffic flow by differential equations (2004) (5)
An analytic model for change of type in three-phase flow (1987) (5)
A survey of nonstrictly hyperbolic conservation laws (1987) (5)
Hyperbolic Conservation Laws and L 2 (2018) (4)
The Fichera Function and Nonlinear Equations (2008) (4)
A Criteria for Certain Wave Structures in Systems that Change Type (1988) (4)
Leading-Edge Singularity in Transonic Small-Disturbance Theory: Numerical Resolution (1979) (3)
Women in Academia : Are We Asking the Right Questions ? (2004) (3)
ASYMPTOTICS OF THE NEGATIVE DISCRETE SPECTRUM OF A CLASS OF SCHRODINGER OPERATORS WITH LARGE COUPLING CONSTANT (2010) (3)
The use of vectorfield dynamics in formulating admissibility conditions for shocks in conservation laws that change type (1990) (2)
Bounds for viscosity profiles for 2 X 2 systems of conservation laws (1982) (2)
High resolution solutions for shock formation in transonic flow problems (2011) (1)
Weak Diffeomorphisms and Solutions to Conservation Laws (2021) (1)
NONLINEAR />LAPLACIAN PROBLEMS ON UNBOUNDED DOMAINS (2010) (1)
A Two-Dimensional Riemann Problem for Scalar Conservation Laws (2011) (1)
Nonstrictly hyperbolic conservation laws : proceedings of an AMS Special Session held [in] January 9-10, 1985 (1987) (1)
Nonuniform dependence on initial data for compressible gas dynamics: The Cauchy problem on $\mathbb{R}^2$ (2016) (1)
Development of singularities in Riemann Invariants (1992) (1)
Analytic and numerical solutions of the transonic small-disturbance equation in the vicinity of a blunt leading edge (1977) (1)
Conservation Laws (2015) (0)
NONPOSITONE ELLIPTIC PROBLEMS IN R" (2010) (0)
Six Themes On Variation (2004) (0)
Ic1 Optimal Execution in a General One-sided Limit Order Book Ic2 Stable Diffusions with Rank-based Interactions, and Models of Large Equity Markets Ic3 Simulation Schemes for Stopped Lvy Processes Ic5 Optimal Order Placement in Limit Order Books (0)
Analysis of self-similar solutions of multidimensional conservation laws (2014) (0)
A TWO-DIMENSIONAL RIEMANN PROBLEM FOR (2011) (0)
Shock stability in systems that change type. Final grant report to the Department of Energy (1995) (0)
How Mathematicians Think: Using Ambiguity, Contradiction, and Paradox to Create Mathematics (review) (2009) (0)
Panel Discussion: Multidimensional Systems of Conservation Laws (2013) (0)
n-LAPLACIAN IN %f¿. DOES NOT LEAD TO REGULARITY (2010) (0)
The unsteady transonic small disturbance equation: Data on oblique curves (2016) (0)
Matrices, Epidemics, and Olga Taussky Todd (2007) (0)
Delta Shocks and Sin gular Shocks (2019) (0)
Multidimensional Conservation Laws and Low Regularity Solutions (2007) (0)
A RIEMANN PROBLEM FOR THE ISENTROPIC GAS DYNAMICS EQUATIONS (2006) (0)
Hyperbolic Conservation Laws Past and Future (2002) (0)
OF THE ELLIPTIC EQUATION Au + K(Ixj)u(n+2)'(n-2) = 0 IN Rn (2016) (0)
ON THE HARMONIC MAPS FROM R2 INTO H2 (2010) (0)
SELF-SIMILAR PROBLEMS IN MULTIDIMENSIONAL CONSERVATION LAWS (2002) (0)
THE LEGACY OF OLGA OLEǏNIK IN HYPERBOLIC CONSERVATION LAWS (2006) (0)
Linear and Nonlinear Waves in Gas Dynamics (2017) (0)

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