On Positive Relational Calculi
نویسندگان
چکیده
We discuss the question of inclusions between positive relational terms and some of its aspects, using the form of a dialogue. Two possible approaches to the problem are emphasized: natural deduction and graph manipulations. Both provide sound and complete calculi for proving the valid inclusions, supporting nice strategies to obtain proofs in normal form, but the latter appears to present several advantages, which are discussed.1
منابع مشابه
تأثیر نوع و مقدار مایعات مصرفی بر سنگهای کلیه: مطالعه مورد-شاهدی
Background & Objectives: Urinary calculi are a common problem worldwide. The pattern of fluid consumption in healthy people and patients with renal calculi is not totally clear. The aim of this study was to determine the association between the amount of fluids intake and urinary calculi. Methods: In this case-control study, cases were the patients with urinary calculi admitted to Emam-Hosse...
متن کاملThe Beneficial Effect of Hydro-alcoholic Extract of Punica Granatum L. Leaves & Flower on Ethylene Glycol-Induced Kidney Calculi in Rats
Background & Aim: Punica granatum L. (pomegranate) is a widely used plant that has high nutritional value .This study evaluated prevention effect of hydro alcoholic extract of Punica granatum flower and leaves ethylene glycol-induced Nephrolithiasis in Wistar rats. Experimental: 20 male Wistar rats were randomly divided into 4 equal groups. G...
متن کاملبررسی رابطه باکتریهای شایع در عفونت ادراری با سنگ ادراری در بیمارستان لبافی نژاد در سال 1383
Background: Urinary calculi comprise one of the major and widespread problems in the urinary tract. Various factors play a role in the formation of urinary stones including nutrition, weather, sex, genes, and urease producing bacteria. The incidence of urinary stones in different societies ranges from 3 to 4 percent. This survey was done in 2004 on 100 patients presenting with urinary calculi ...
متن کاملبررسی رابطه باکتریهای شایع در عفونت ادراری با سنگ ادراری در بیمارستان لبافی نژاد در سال 1383
Analyzing the relation between widespread bacteria in urinary infections and urinary calculi in Labaffi Nejad Hospital 2004 . Eslamie G, Taghavie A, Nowroozi J: Department of Microbiology, Shaheed Beheshti University of Medical Sciences Abstract: Background: Urinary calculi comprise one of the major and widespread problems in the urinary tract. Various factors play a role in the formati...
متن کاملThe Beneficial Effect of Hydro-alcoholic Extract of Punica Granatum L. Leaves & Flower on Ethylene Glycol-Induced Kidney Calculi in Rats
Background & Aim: Punica granatum L. (pomegranate) is a widely used plant that has high nutritional value .This study evaluated prevention effect of hydro alcoholic extract of Punica granatum flower and leaves ethylene glycol-induced Nephrolithiasis in Wistar rats. Experimental: 20 male Wistar rats were randomly divided into 4 equal groups. G...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Logic Journal of the IGPL
دوره 15 شماره
صفحات -
تاریخ انتشار 2007