Can anybody do the following problem? I don't know how to go about doing it... Give an example to show that if R and S are both n-ary relations, then may be different from
Follow Math Help Forum on Facebook and Google+
Originally Posted by robocop_911 Give an example to show that if R and S are both n-ary relations, then may be different from How does your text define ? Please be complete in your answer.
Originally Posted by Plato How does your text define ? Please be complete in your answer. The projection where , maps the n-tuple to the m-tuple , where m <= n. In other words, the projection P_i1, i_2,..., i_m deletes of the components of an n-tuple, levaing the i1th, i2th and imth components.
Originally Posted by robocop_911 The projection where , maps the n-tuple to the m-tuple , where m <= n. In other words, the projection P_i1, i_2,..., i_m deletes of the components of an n-tuple, levaing the i1th, i2th and imth components. For example: If is applied to a 4 tuple (2,3,0,4) gives (2,0)
View Tag Cloud