Laurasiatheria by Ciro Santilli 37 Updated +Created
Euarchontoglires by Ciro Santilli 37 Updated +Created
Tardigrade by Ciro Santilli 37 Updated +Created
Video 1.
We FINALLY Understand Why Tardigrades Refuse to Die by Dr Ben Miles
. Source.
Panarthropoda subclade by Ciro Santilli 37 Updated +Created
Protolyst by Ciro Santilli 37 Updated +Created
Closed source, no local editing? PDF annotation focus.
Seems like a "organize ideas for my private academic research" use case.
Co-founded by this dude: x.com/iamdrbenmiles
Quantum well by Ciro Santilli 37 Updated +Created
FlyWire by Ciro Santilli 37 Updated +Created
Panarthropoda by Ciro Santilli 37 Updated +Created
A bunch of things that looks like insects, notably arthropods and tardigrades.
Type of superconductor by Ciro Santilli 37 Updated +Created
Superconducting phase diagram by Ciro Santilli 37 Updated +Created
There are various possibilities for the axes, but some common ones:
Figure 1.
Sketch of the typical superconducting phase diagram of a Type-I superconductor
. Source.
Figure 2.
Sketch of the typical superconducting phase diagram of a Type-II superconductor
. Source.
Figure 1.
DNS Census 2013 website
. Source. This source provided valuable historical domain to IP data.
amazon.com,2012-02-01T21:33:36,72.21.194.1
amazon.com,2012-02-01T21:33:36,72.21.211.176
amazon.com,2013-10-02T19:03:39,72.21.194.212
amazon.com,2013-10-02T19:03:39,72.21.215.232
amazon.com.au,2012-02-10T08:03:38,207.171.166.22
amazon.com.au,2012-02-10T08:03:38,72.21.206.80
google.com,2012-01-28T05:33:40,74.125.159.103
google.com,2012-01-28T05:33:40,74.125.159.104
google.com,2013-10-02T19:02:35,74.125.239.41
google.com,2013-10-02T19:02:35,74.125.239.46
https://raw.githubusercontent.com/cirosantilli/media/master/ciro-love-sqlite.png
 -------------------------------------
|  Force of Will               3 U U  |
|  ---------------------------------  |
| |                  ////////////   | |
| |                ////() ()\////\  | |
| |               ///_\ (--) \///\  | |
| |        )      ////  \_____///\\ | |
| |       ) \      /   /   /    /   | |
| |    ) /   \     |   |  /   _/    | |
| |   ) \  (  (   /   / /   / \     | |
| |  / ) ( )  / (    )/(    )  \    | |
| |  \(_)/(_)/  /UUUU \  \\\/   |   | |
| .---------------------------------. |
| Interrupt                           |
| ,---------------------------------, |
| | You may pay 1 life and remove a | |
| | blue card in your hand from the | |
| | game instead of paying Force of | |
| | Will's casting cost.  Effects   | |
| | that prevent or redirect damage | |
| | cannot be used to counter this  | |
| | loss of life.                   | |
| | Counter target spell.           | |
| `---------------------------------` |
|                                     l
| Illus.  Terese Nelsen               |
 -------------------------------------
Code 1.
ASCII art of a Force of Will Magic: The Gathering card inscribed in the Bitcoin blockchain
.
Powered by crosstool-NG:
.global main
main:
    /* 0x20026 == ADP_Stopped_ApplicationExit */
    mov x1, 0x26
    movk x1, 2, lsl 16
    str x1, [sp, 0]

    /* Exit status code. Host QEMU process exits with that status. */
    mov x0, 0
    str x0, [sp, 8]

    /* x1 contains the address of parameter block.
     * Any memory address could be used.
     */
    mov x1, sp

    /* SYS_EXIT */
    mov w0, 0x18

    /* Do the semihosting call on A64. */
    hlt 0xf000
Assertions! The best way to learn assembly.
#include <lkmc.h>

LKMC_PROLOGUE
    /* Register immediate. */
    mov $1, %rax
    add $2, %rax
    LKMC_ASSERT_EQ(%rax, $3)
LKMC_EPILOGUE
#include <linux/module.h>
#include <linux/kernel.h>

static int myinit(void)
{
	pr_info("hello init\n");
	/* 0 for success, any negative value means failure,
	 * E* consts if you want to specify failure cause.
	 * https://www.linux.com/learn/kernel-newbie-corner-loadable-kernel-modules-coming-and-going */
	return 0;
}

static void myexit(void)
{
	pr_info("hello exit\n");
}

module_init(myinit)
module_exit(myexit)
MODULE_LICENSE("GPL");
E.g., if you want aarch64 instead of the default x86_64:
./build -aA
./run -aA
That's it.
Start QEMU and wait for GDB:
./run --gdb-wait
On another shell, connect GDB to QEMU and run up to a symbol that shows up at boot:
./run-gdb start_kernel
Outcome: we are GDB step debugging the Linux Kernel:
Breakpoint 1, start_kernel () at /root/lkmc/submodules/linux/init/main.c:837
837     {
loading vmlinux
(gdb) n
841             set_task_stack_end_magic(&init_task);
(gdb) l
836     asmlinkage __visible void __init __no_sanitize_address start_kernel(void)
837     {
838             char *command_line;
839             char *after_dashes;
840
841             set_task_stack_end_magic(&init_task);
842             smp_setup_processor_id();
843             debug_objects_early_init();
844
845             cgroup_init_early();
(gdb) p &init_task
$1 = (struct task_struct *) 0xffffffff82012840 <init_task>
(gdb) bt
#0  start_kernel () at /root/lkmc/submodules/linux/init/main.c:841
#1  0xffffffff8215145c in x86_64_start_reservations (real_mode_data=<optimized out>) at /root/lkmc/submodules/linux/arch/x86/kernel/head64.c:490
#2  0xffffffff821514e3 in x86_64_start_kernel (real_mode_data=0x138d0 <bts_ctx+2256> <error: Cannot access memory at address 0x138d0>) at /root/lkmc/submodules/linux/arch/x86/kernel/head64.c:471
#3  0xffffffff810000e6 in secondary_startup_64 () at /root/lkmc/submodules/linux/arch/x86/kernel/head_64.S:243
#4  0x0000000000000000 in ?? ()
(gdb) up
#1  0xffffffff8215145c in x86_64_start_reservations (real_mode_data=<optimized out>) at /root/lkmc/submodules/linux/arch/x86/kernel/head64.c:490
490             start_kernel();
(gdb) l
485                     break;
486             default:
487                     break;
488             }
489
490             start_kernel();
491     }

Pinned article: ourbigbook/introduction-to-the-ourbigbook-project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact