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Ask Biology

Is “Cloning” exact or almost similar to parent?

I was studying “Reproduction in Organism” as an interest of my own and there was a line offspring produced through single parent are exact copies of their parent. Also, they are genetically identical. So, in here, it says, “genetically identical” (I assume that identical here implies exactly same) but then the next line quite confused […]

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Linux Mastering Development

Why does wcalc output rounding symbol (~=) for integer operations (subtraction)?

I have noted, that man wcalc says: –ints Toggles whether long integers will be abbreviated or not. This conflicts with engineering notation for large numbers, but not for decimals. … Rounding in the command-line version is denoted by a tilde before the equals sign (~=). So, I try this: $ wcalc –version wcalc 2.5 $ […]

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Mastering Development System & Network

Cert Hostname DOES NOT VERIFY

I’ve created a mail server with https://github.com/tomav/docker-mailserver. Everything works, except the certificate. I have tested the TLS on CheckTLS.com and I’ve got the following output messages: As you can see on the image, it says, that Cert Hostname DOES NOT VERIFY (dataxu.io != email.dataxu.io | DNS:email.dataxu.io), do I miss any DNS entry? The DNS records […]

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Ask Mathematics

Stability of eigenvalues/singular values on altering the matrix

From Strang’s Introduction to Linear Algebra (p375), there is a paragraph on the instability of eigenvalues in relation to the stability of singular values when $A$ is altered slightly. Moreover, it says, that the instability of eigenvalues is only if $AA^T$ is far from $A^TA$, but if those are very similar, the eigenvalues are also […]

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Ask Mathematics

Stability of eigenvalues/singular values on altering the matrix

From Strang’s Introduction to Linear Algebra (p375), there is a paragraph on the instability of eigenvalues in relation to the stability of singular values when $A$ is altered slightly. Moreover, it says, that the instability of eigenvalues is only if $AA^T$ is far from $A^TA$, but if those are very similar, the eigenvalues are also […]

Categories
Ask Mathematics

Stability of eigenvalues/singular values on altering the matrix

From Strang’s Introduction to Linear Algebra (p375), there is a paragraph on the instability of eigenvalues in relation to the stability of singular values when $A$ is altered slightly. Moreover, it says, that the instability of eigenvalues is only if $AA^T$ is far from $A^TA$, but if those are very similar, the eigenvalues are also […]

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Ask Games Video Games

i cant play servers in minecraft java edition

I just changed my name, now I cant log back into any servers. I tried logging out and back in, and it did nothing. Please help. When I join Hypixel, it says, “You haven’t logged into Hypixel before and we’re offilne!” Please help.

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Ask English Speaking

“Bang on the hammer”?

It says, “The next day, Hem and Haw returned with tools. Hem held the chisel, while Haw banged on the hammer until they made a hole in the wall.” I don’t really get why it says “…Haw banged on the hammer…” I would understand this part as saying that Haw hit the hammer with something. […]

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Development User Help

Issue after installation of Windows 10 update

Two days ago, Windows 10 updated successfully and after update, it was working fine. Today morning, when I turn on, it says, Automatic Repair. After few minutes, Automatic Repair failed, then I saw other options; Shut Down, Restart and Advanced Option. Using Advanced Option, I tried to restore but unable to restore at any restore […]

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Development Linux

No /sys/kernel/config/usb_gadget

I followed https://events.static.linuxfound.org/sites/events/files/slides/USB%20Gadget%20Configfs%20API_0.pdf and complied the kernel with Device drivers [*] USB support <M> USB Gadget Support <M> USB Gadget functions configurable through configfs [*] Function filesystem (FunctionFS) I installed the modules and placed the kernel in /boot of my Raspberry Pi 3B and rebooted. I don’t see /sys/kernel/config/usb-gadget folder. when i try to create […]