20.07.2013 Views

Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

5.15. D ˚usledek. Holomorfní funkce má v otevˇrené množině<br />

derivace všech ˇrád˚u !<br />

D˚ukaz: r ... poloměr kružnice K<br />

Volme 0 < ϱ < r a označme Kϱ = {z | |z − z0| = ϱ}. Vyjdeme z<br />

Cauchyova vzorce pro z ∈ Int Kϱ<br />

|w − z0| = ϱ:<br />

1<br />

w − z =<br />

f (z) = 1<br />

<br />

2πj Kϱ<br />

1<br />

w − z0 + z0 − z =<br />

f (w)<br />

dw .<br />

w − z<br />

1<br />

·<br />

w − z0<br />

|z − z0| |z − z0|<br />

= < 1 .<br />

|w − z0| ϱ<br />

1<br />

1 − z−z 0<br />

w−z 0<br />

Jan Hamhalter http://math.feld.cvut.cz/hamhalte Matematika pro Kybernetiku <strong>Lecture</strong> Notes 134 / 369<br />

.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!