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(Color online) Comparison of mean radial density of tumor cells at times t = 600, 750, and 900. The blue lines correspond to the results obtained from direct simulation, and with red broken lines we depict the results of the application of coarse projective integration in a comoving frame with t2 − t1 = 25 and tproject − t2 = 100 using K = 50 Fourier coefficients. tproject − t2 = 100 and t2 − t1 = 25. Here, the computational
