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E x um W a c o Ac m e D ig g s B a d in C ly de W a d e C o at s C o lo n R u f in U io n B a rc o Jo h n s Do v e r D e rit a C ru s o J so n C a s a r L o n g s D ra G l ke o b e C u rri e B r a M il t In g o ld Ga t s M in go O te e n B a n n B y nu m J u s ti c V a nd e r C h ar it G ib s o n H a ml t W in t o B r c N e so n P o nz e rB/ b e b H t _ ^ b g _ g g u c k _ d j _ l Z j b Z l = e h Z e v g h h n h j m f Z k h l j m ^ g b d h \ h j Z g h \ i h h _ k i _ q _ g b x i j h ^ h \ h e v k l \ _ g g h c _ a h i Z k g h k l b, c/o Food Safety Department World Health Organization , Avenue Appia CH1211 Geneva 27 Switzerland n Z d k Z 41 22Z!cf(z) = Lif and only if lim (x;y )!c 1;c 2 u(x;y) = aand lim (x;y)!(c 1;c 2) v(x;y) = b Thus the story for limits of functions of a complex variable is the same as the story for limits of real valued functions of the variables x;y However, a real variable xcan approach a real number conly Ordering Codes ƒAƒVƒ ƒƒ"ƒY "¯Œ^ ƒc[ƒuƒƒbƒN