权威例句
A Note on Some Contractible 4-ManifoldsEfficient Non-Contractible Investments in Finite EconomiesNon-contractible investments and vertical integration in the Mexican footwear industryDisposable diapers with elastically contractible waistbandsContractible edges in n -connected graphs with minimum degree greater than or equal to [5 n /4]Embeddings of graphs with no short noncontractible cyclesSmooth p-adic analytic spaces are locally contractibleSpheres in infinite-dimensional normed spaces are Lipschitz contractibleFinding shortest non-separating and non-contractible cycles for topologically embedded graphsPartnership in a Dynamic Production System with Unobservable Actions and Noncontractible Output
