Systemd: Consistent Network Device Naming:

Command:

$ ifconfig enp0s3
enp0s3    Link encap:Ethernet  HWaddr 01:00:27:e0:e0:90
          inet addr:192.168.0.6  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: 240f:73:3f1c:1:a00:27ff:fed3:c992/64 Scope:Global
          inet6 addr: fe80::a00:27ff:fed3:c992/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:106346 errors:0 dropped:0 overruns:0 frame:0
          TX packets:53448 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:154908226 (154.9 MB)  TX bytes:3778719 (3.7 MB)

• en: Ethernet
• p0s3: PCI device (p<bus>s<slot>)

TRF: EZ DO DANCE

Alex Bellos & Roger Bowley: Numberphile: Pi

Alex Bellos

Douglas Adams: On David Letterman (14 February 1985)

Douglas Adams

James Grime: 42 and Douglas Adams

• Pronic number (矩形数)
• Harshad number (ハーシャッド数)

Contact lens: 1-DAY ACUVUE TruEye 30枚入り

1-DAY ACUVUE TruEye

• Quantity (数量): 2
• Price (価格): 3996 yen (円)
• Shipping (送料): 540 yen (円)
• Wire transfer commission fee: (他行宛電信振込手数料): 216 yen (円)
• Total (合計): 4752 yen (円)
• Retailer: レンズフィット (lensfit.jp)

Disk enclosure: Kuroutoshikou (玄人志向): GW3.5AA-SUP3/MB

GW3.5AA-SUP3/MB

• Price (価格): 2,463 yen (円)
• Shipping (送料): 0 yen (円)
• Wire transfer commission fee: (他行宛電信振込手数料): 216 yen (円)
• Total: 2,679 yen (円)
• Retailer: Amazon.co.jp

Hard disk drive: Western Digital (ウェスタン・デジタル): WD30EZRZ-RT

• 3TB
• Price (価格): 7,990 yen (円)
• 1GBあたりの価格: 2.66 yen / GB
• Shipping (送料): 0 yen (円)
• Wire transfer commission fee: (他行宛電信振込手数料): 216 yen (円)
• Total: 8,206 yen (円)
• Retailer: e-TREND

James Grime: 998,001 and its Mysterious Recurring Decimals

• 1/999^2 = 1/998001 = 0.000 001 002 003 ... 996 997 999 000 001 ...

Burkard Polster: Riemann's paradox: pi = infinity minus infinity

Burkard Polster

• Riemann series theorem
• Riemann rearrangement theorem

TM NETWORK: TV Special 1984～1990

杉山清貴＆オメガトライブ: SUMMER SUSPICION

Animal: Funny Goats Screaming like Humans

Alex Clark: 163 and Ramanujan Constant

Alex Clark

• e^(√163 * π) = 262 537 412 640 768 743.9999999999992500 ...

Ramanujan constant