Indian stock market indices, Sensex and Nifty 50, are expected to open lower on Wednesday, influenced by mixed global cues and a discount in Gift Nifty. On Tuesday, both indices closed lower, with Sensex dropping 250.48 points and Nifty 50 falling 57.95 points. Analysts suggest immediate resistance for Sensex is around 84,100-84,200, while Nifty 50 shows a positive short-term trend with potential to surpass 25,900-26,000 levels.