The term "support interval" refers to a range of values for which a mathematical function or statistical model has non-zero values. It is commonly used in mathematical and statistical analysis to determine the range of input values where the function or model has significant predictive power. Some synonyms for "support interval" include domain, range, input space, and data space. These terms are often used interchangeably, depending on the context and focus of the analysis. The support interval is an important concept for understanding the behavior of mathematical and statistical models and is critical for making accurate and reliable predictions in a range of scientific and industrial applications.