Countries citing papers authored by Walter Littman
Since
Specialization
Citations
This map shows the geographic impact of Walter Littman's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Walter Littman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Walter Littman more than expected).
This network shows the impact of papers produced by Walter Littman. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Walter Littman. The network helps show where Walter Littman may publish in the future.
Co-authorship network of co-authors of Walter Littman
This figure shows the co-authorship network connecting the top 25 collaborators of Walter Littman.
A scholar is included among the top collaborators of Walter Littman based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with Walter Littman. Walter Littman is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Gulliver, Robert, Walter Littman, & Roberto Triggiani. (2000). Differential geometric methods in the control of partial differential equations : 1999 AMS-IMS-SIAM joint summer research conference on differential geometric methods in the control of partial differential equations, University of Colorado, Boulder, June 27-July 1, 1999. American Mathematical Society eBooks.1 indexed citations
Littman, Walter & Stephen Taylor. (1993). Local smoothing and energy decay for a semi-infinite beam pinned at several points and applications to boundary control. University of Minnesota Digital Conservancy (University of Minnesota).2 indexed citations
Littman, Walter. (1978). Boundary control theory for hyperbolic and parabolic partial differential equations with constant coefficients. French digital mathematics library (Numdam). 5(3). 567–580.22 indexed citations
12.
Littman, Walter, et al.. (1972). “Farfield” behavior of solutions to partial differential equations : asymptotic expansions and maximal rates of decay along a ray. Florence Research (University of Florence). 26(4). 807–827.2 indexed citations
Littman, Walter. (1963). Generalized subharmonic functions : monotonic approximations and an improved maximum principle. French digital mathematics library (Numdam). 17(3). 207–222.26 indexed citations
18.
Littman, Walter, G. Stampacchia, & Hans F. Weinberger. (1963). Regular points for elliptic equations with discontinuous coefficients. French digital mathematics library (Numdam). 17. 43–77.398 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.