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  2. Lindy effect - Wikipedia

    en.wikipedia.org/wiki/Lindy_effect

    Thus, the Lindy effect proposes the longer a period something has survived to exist or be used in the present, the longer its remaining life expectancy. Longevity implies a resistance to change, obsolescence, or competition, and greater odds of continued existence into the future. [2] Where the Lindy effect applies, mortality rate decreases ...

  3. Exercise book - Wikipedia

    en.wikipedia.org/wiki/Exercise_book

    The exercise book format is different for some subjects: for the majority of subjects, the exercise book will contain lined paper with a margin, but for other subjects such as mathematics, the exercise book will contain squared paper to aid in the drawing of graphs, tables or other diagrams.

  4. Secondary School Mathematics Curriculum Improvement Study

    en.wikipedia.org/wiki/Secondary_School...

    Work on the SSMCIS program began in 1965 [3] and took place mainly at Teachers College. [9] Fehr was the director of the project from 1965 to 1973. [1] The principal consultants in the initial stages and subsequent yearly planning sessions were Marshall H. Stone of the University of Chicago, Albert W. Tucker of Princeton University, Edgar Lorch of Columbia University, and Meyer Jordan of ...

  5. The 5 foods longevity expert Dr. Mark Hyman eats each ... - AOL

    www.aol.com/finance/5-foods-longevity-expert-dr...

    The longevity secrets of Singapore, the 6th blue zone city where people are living the longest, happiest lives The strict anti-aging routine of a 45-year-old CEO who spends millions a year to be ...

  6. Mathematical model - Wikipedia

    en.wikipedia.org/wiki/Mathematical_model

    A discrete model treats objects as discrete, such as the particles in a molecular model or the states in a statistical model; while a continuous model represents the objects in a continuous manner, such as the velocity field of fluid in pipe flows, temperatures and stresses in a solid, and electric field that applies continuously over the ...

  7. Longevity - Wikipedia

    en.wikipedia.org/wiki/Longevity

    Longevity is a highly plastic trait, and traits that influence its components respond to physical (static) environments and to wide-ranging life-style changes: physical exercise, dietary habits, living conditions, and pharmaceutical as well as nutritional interventions.

  8. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  9. Life expectancy - Wikipedia

    en.wikipedia.org/wiki/Life_expectancy

    Longevity refers to the relatively long lifespan of some members of a population. Maximum lifespan is the age at death for the longest-lived individual of a species. Mathematically, life expectancy is denoted e x {\displaystyle e_{x}} [ a ] and is the mean number of years of life remaining at a given age x {\displaystyle x} , with a particular ...