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F. Unferdinger - MaRDI portal

F. Unferdinger

From MaRDI portal
Person:1558533

Available identifiers

zbMath Open unferdinger.frFactGridQ889242WikidataQ28944091 ScholiaQ28944091MaRDI QIDQ1558533

List of research outcomes

PublicationDate of PublicationType
Ueber die Auflösung eines linearen Systems von Gleichungen.1874-01-01Paper
On some limits related to the limit Lim\(\frac{n}{\root n\of{n!}}=e\) (for \(n=\infty\))1873-01-01Paper
The average of radius of curvature and the average curvature of a fixed point of a surface1873-01-01Paper
On the remarkable properties of the expression \[ z^n {m \choose 1} (z 1)^n + {m \choose 2} (z 2)^n \cdots +( 1)^m {m \choose m}(z m)^n \ and their applications]1873-01-01Paper
Contribution to the theory of elliptic integrals.1872-01-01Paper
On the theory of maxima and minima.1871-01-01Paper
On the theory of simultaneous substitutions in double and triple integrals.1871-01-01Paper
On a transformation of the definite integral \(\int_0^\alpha \log \frac{a + b\cos x}{a b\cos x}dx\).1871-01-01Paper
About a spherical triangle, with one angle equal to the sum of the other two.1870-01-01Paper
Ueber die Bestimmung einer Curve aus ihrer Tangenteneigenschaft.1870-01-01Paper
Ueber den Ausdruck des Krümmungsradius in Polarcoordinaten und über diejenigen Curven, deren Gleichung: \(r^k=a^k\sin k\theta\).1870-01-01Paper
Theory of tetrahedra from the 6 edges1870-01-01Paper
Transformation and evaluation of the triple integral \[ \iiint F \left( \frac{x^2}{a^2} + \frac {y^2}{b^2} + \frac{z^2}{c^2}, \alpha x + \beta y + \gamma z \right) dx dy dz \ .]1870-01-01Paper
Transformation and evaluation of the triple integral \[ \iiint F \left( \frac{x^2}{a^2} \frac{y^2}{b^2} \frac{z^2}{c^2}, \alpha x + \beta y + \gamma z \right) dx dy dz. \]1870-01-01Paper
Relation between the radius of the spheres of contact of a trilateral pyramid1869-01-01Paper
Cubature of the segments and the levelspaces in surfaces of order two1869-01-01Paper
On criteria about the divisibility of numbers.1869-01-01Paper
On Dirichlet's paradox for infinite series.1869-01-01Paper
General derivatives of the functions \(e^{a x} \cos (\alpha + \beta x)\), \(e^{a x} \sin (\alpha + \beta x)\), \(x^a \cos [b \log (\alpha + \beta x)\), \(x^a \sin [b \log \alpha + \beta x)]\) etc.]1869-01-01Paper
On one theorem of spherical triangles1869-01-01Paper
The various representations of the product \[ (a^{2}+b^{2}+c^{2}+d^{2})(a_{1}^{2}+b_{1}^{2}+c_{1}^{2}+d_{1}^{2 })....(a_{n 1}^{2}+b_{n 1}^{2}+c_{n 1}^{2}+d_{n 1}^{2}) \ as sums of four squares]1869-01-01Paper
On the two general integrals \[ \int x^n \cos [m \log (a + bx)dx, \int x^n \sin [m \log (a + bx)]dx \] and some related forms.]1869-01-01Paper
The general formula for the sum of the angles in a polygon.1868-01-01Paper
On some remarkable formulas of spherical trigonometry.1868-01-01Paper
Derivation of the complanation formula in polar coordinates, from the figure.1868-01-01Paper
The pendulum as an instrument of geodesy.1868-01-01Paper
On a casus irreducibilis in real quantities.1868-01-01Paper
On the value of the expression \(\frac1{(m+\delta)^\epsilon}+\frac1{(m+2\delta)^\epsilon}+\cdots+\frac1 {(m+(m(n-1)\delta)^\epsilon}\) for \(m=\infty\) and on the Dirichlet paradox.1868-01-01Paper
Solution of the two equations \[ \begin{aligned} a_0(x^2-y^2)-2b_0xy+a_1x- b_1y+a_2&=0,\\ b_0(x^2-y^2)-2a_0xy+b_1x-a_1y+b_2&=0. \end{aligned} \]1868-01-01Paper

Research outcomes over time


Doctoral students

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