2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/210316We describe and compute the homotopy of spectra of topological modular forms of level 3. We give some computations related to the "building complex" associated to level 3 structures at the prime 2. Finally, we note the existence of a number of connective models of the spectrum TMF(Gamma_0(3)).This was submitted to the journal in 2006. Apparently I neglected to upload it to arXiv between then and nowAlgebraic Topology55N34, 11F11text