Pith Number

pith:QHXGHAIR

pith:2018:QHXGHAIRP5IN7AWKSGDRCG7SWL

not attested not anchored not stored refs pending

A Hybrid Adaptive Low-Mach-Number/Compressible Method: Euler Equations

Ann Almgren, Emmanuel Motheau, John B. Bell, Max Duarte

arxiv:1808.02562 v1 · 2018-08-07 · math.NA · physics.comp-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHXGHAIRP5IN7AWKSGDRCG7SWL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:08:35.014138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81ee6381117f50df82ca9187111bf2b2cf8e6d39f46832b1ae90ca4457eb9b45

Aliases

arxiv: 1808.02562 · arxiv_version: 1808.02562v1 · doi: 10.48550/arxiv.1808.02562 · pith_short_12: QHXGHAIRP5IN · pith_short_16: QHXGHAIRP5IN7AWK · pith_short_8: QHXGHAIR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QHXGHAIRP5IN7AWKSGDRCG7SWL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 81ee6381117f50df82ca9187111bf2b2cf8e6d39f46832b1ae90ca4457eb9b45

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f6dd27c6ce9be86a159f8c12eb6f839c5efb21adc97c35de177eee2a48cf7a0",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-08-07T21:56:48Z",
    "title_canon_sha256": "71f50378d02083ffdff4461263b510ac8961da2ca0475975b8b08b6d3f5ce6b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02562",
    "kind": "arxiv",
    "version": 1
  }
}