Upshot: Leng attacks the indispensability argument for the existence of mathematical objects. She offers an account that treats the role of mathematics in science as an indispensable and useful part of theories, but retains nonetheless a fictionalist position towards mathematics. The result is an account of mathematics that is interesting for constructivists. Her view towards the nominalistic part of science is, however, more in conflict with radical constructivism.
Context: Maturana’s published corpus is vast, and his publications span multiple venues, formats, and languages. For these and other reasons, the corpus is as complex as it is daunting in its scale. Problem: Over the last two decades, bibliographic data on Maturana’s publications had proliferated in terms of available resources, scope of coverage, and accessibility. However, as of 2011 the degree of accessibility was not matched by the inclusiveness, detail, and accuracy of the relatively few dedicated bibliographies upon which most such resources relied. It had become time to update, consolidate, and better validate the core bibliographic data. Method: The five most comprehensive electronic bibliographies were merged and collated. The merged listing was then validated using the available evidence and a three-tiered set of evaluation criteria. Finally, the resultant merged and validated listing was augmented with previously unrecorded entries and data, subject to the same evidentiary constraints and evaluation criteria pertaining to the validation phase. Results: None of the five bibliographies in the starting set was comprehensive. All five contained ambiguities, missing details, discrepancies, and outright errors. The updated and consolidated listing presented here is the largest, most comprehensive, and most accurate compiled to date. Implications: The resultant bibliography offers a more complete and more reliable reference resource to both veteran Maturana scholars and newcomers to his work than previously existing bibliographies.