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We demonstrate that the four high-frequency QPOs observed in GRS 1915+105 canbe interpreted as the oscillation modes on disks which non-linearly andresonantly interact with a warp. The warp is assumed to be a low-frequencyglobal pattern on the disk. This identification suggests that the relevantmass, $M$, and spin, $a$, of GRS 1915+105 are, $M=13\sim 14 M_\odot$ and$a=0\sim 0.15$Comment: 4 pages, 5 figures, accepted in PASJ Vol.56(2004) No.5, The English  was improved on September

Mass and Spin of GRS 1915 $+$ 105 Based on a Resonance Model of QPOs