Abstract Let X ⊂ ℙ n be an unramified real curve with (ℝ) ≠ 0. If ≥ 3 is odd, Huisman [9] conjectured that M -curve and every branch of a pseudo-line. 4 even, he conjectures rational normal or twisted form such curve. Recently, family -curves in providing counterexamples to the first conjecture was constructed [11]. In this note we construct another are not even -curves. We remark second follow...

Many applications, such as contour machining, rapid prototyping, and reverse engineering by laser scanner or coordinate measuring machine, involve sampling of free-from surfaces along section cuts by a family of parallel planes with equidistant spacing ∆ and common normal N. To ensure that such planar sections provide faithful descriptions of the shape of a surface, it is desirable to choose th...

As its name suggests, the method uses semantic facts about the language in an attempt to generate a countermodel for the argument at hand (or to show that there is no such counter-model and that the argument is therefore valid). In this, the method bears a strong similarity to Resolution, but it does not require any conversion to a normal form. The method is also different in being an analytic ...

v. dannon showed that spherical curves in e4 can be given by frenet-like equations, and he thengave an integral characterization for spherical curves in e4 . in this paper, lorentzian spherical timelike andspacelike curves in the space time 41 r are shown to be given by frenet-like equations of timelike andspacelike curves in the euclidean space e3 and the minkowski 3-space 31 r . thus, finding...

Normal aggregate replacement to the onyx waste will certainly make compressive strength and modulus of elasticity different, so it affect value stress block equivalent (β1) as a result extent changing strain curve. In this study, trying compare between experimental β1 concrete, while analytically for normal concrete was obtained in accordance with SNI 2847 - 2019. To get from is made by looking...

The Lorenz curve for assessing economic inequality depicts the relation between two cumulative distribution functions (CDFs), one for the distribution of incomes or wealth and the other for their first-moment distribution. By contrast, the receiver operating characteristic (ROC) curve for evaluating diagnostic systems depicts the relation between the complements of two CDFs, one for the distrib...

In this paper we will describe a numerical method for the solution of curve ow problems in which the normal velocity of the curve depends locally on the position, normal and curvature of the curve. The method involves approximating the curve by a number of line elements (segments) which are only allowed to move in a direction normal to the element. Hence the normal of each line element remains ...

The Lorenz curve for assessing economic inequality depicts the relation between two cumulative distribution functions (CDFs), one for the distribution of incomes or wealth and the other for their first-moment distribution. By contrast, the receiver operating characteristic (ROC) curve for evaluating diagnostic systems depicts the relation between the complements of two CDFs, one for the distrib...