claiming the house in 2008 if my name is not on the mortgage, but property tax?

hi everyone! i want to know if i can claim the house this year if my name is not on the mortgage but on the property tax? my brother’s name is on the mortgage, but BOTH our names are on the property tax. he will NOT be claiming, because he said i can claim it. so, can i? and yes, i have paid more than half the mortgage since last june and i paid all the property tax this past year.