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						Article details | 
						
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						ON 
						CONTRA PRECONTINUOUS 
						FUNCTIONS IN BITOPOLOGICAL SPACES 
						
						SANJOY KUMARBISWAS1*, NASIMA 
						AKTHER2 
						
						1,2Department of Mathematics, 
						University of Rajshahi, Rajshahi, Bangladesh | 
						
						1-11  | 
					
					
						
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						 -FUZZY 
						SUBBIGROUP OF A BIGROUP 
						
						T. JUSTIN PRABU1, K.ARJUNAN2 
						
						1Department of Mathematics, 
						Alagappa University Evening College, 
						Paramakudi-Tamilnadu, India 
						2Department of Mathematics, H.H.The Rajahs College, 
						Pudukkottai, Tamilnadu, India | 
						
						12-15  | 
					
					
						
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						COMMON FIXED POINT THEOREMS 
						FO FOUR WEAKLY COMPATIBLE SELF-MAPPINGS IN FUZZY METRIC 
						SPACES 
						
						Dr. V. Dharmaiah1, N. Appa 
						Rao2, 
						
						1Department of Mathematics, Osmania 
						University 
						Hyderabad (TS) 
						2Department of Mathematics 
						Dr. B.R. Ambedkar Open University 
						Hyderabad (TS) | 
						
						16-25  | 
					
					
						
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						RULED SURFACE PAIR GENERATED BY DARBOUX VECTORS OF A 
						CURVE AND ITS 
						NATURAL LIFT IN IR3 
						
						Evren ERGÜN1, Mustafa 
						ÇALIŞKAN2 
						
						1Ondokuz Mayıs University, Çarşamba 
						Chamber of Commerce Vocational School, Samsun, Turkey, 
						eergun[at]omu.edu.tr 
						2Gazi University Faculty of Sciences Department of 
						Mathematics, Ankara, Turkey 
						mustafacaliskan[at]gazi.edu.tr | 
						
						26-32  | 
					
					
						
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						COMBINATION OF TWO RATIO TYPE ESTIMATOR FOR ESTIMATING 
						POPULATION MEAN USING AUXILIARY VARIABLE WITH DOUBLE 
						SAMPLING IN PRESENCE OF NON-RESPONSE  
						
						RAJKUMAR HAZRA  
						
						M.Sc. (Indian Institute of 
						Technology Kanpur, UP, India) Guest Lecturer, Department 
						of Statistics, Midnapore College (Autonomus), Midnapore, 
						WB, India | 
						
						33-41  | 
					
					
						
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						TRUNCATED TWO PIECE BIVARIATE LOGNORMAL DISTRIBUTION 
						
						Dr. PARAG B SHAH1, Dr. C. D. 
						BHAVSAR2 
						
						1Dept. of Statistics, H.L.College 
						of Commerce, Ahmedabad, GUJARAT, INDIA 
						2 Dept. of Statistics, Gujarat University, Ahmedabad, 
						GUJARAT, INDIA | 
						
						42-48  | 
					
					
						
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						SUMMARIZING UNOBTRUSIVE DATA WITH EXTREME VALUES USING 
						MULTIPLE 
						MEANS 
						
						
						JOHN KOMLA COKER 
						AYIMAH 
						
						Lecturer (Ho Polytechnic) & PhD 
						Student (UG-Legon), Department of Statistics | 
						
						49-62  | 
					
					
						
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						ON 
						A SUBCLASS OF MULTIVALENT FUNCTIONS DEFINED BY AL-OBOUDI 
						OPERATOR 
						
						
						Dr. POONAM DIXIT1, 
						PUNEET SHUKLA2 
						
						1,2Department of Mathematics 
						UIET, C.S.J.M. University, Kanpur | 
						63-79  |