Pith Number

pith:NQGJPPUM

pith:2018:NQGJPPUMKF66LWRKFD6EPSABOG

not attested not anchored not stored refs pending

Global Existence of Solutions to the Compressible Euler Equations with Time-dependent Damping and Logarithmic State Equation

Ka Luen Cheung, Sen Wong

arxiv:1807.00550 v2 · 2018-07-02 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NQGJPPUMKF66LWRKFD6EPSABOG}

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	2026-05-17T23:55:29.220517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c0c97be8c517de5da2a28fc47c801718e2e4b372fc102eba6b5ead5dfc2bf3c

Aliases

arxiv: 1807.00550 · arxiv_version: 1807.00550v2 · doi: 10.48550/arxiv.1807.00550 · pith_short_12: NQGJPPUMKF66 · pith_short_16: NQGJPPUMKF66LWRK · pith_short_8: NQGJPPUM

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/NQGJPPUMKF66LWRKFD6EPSABOG \
  | 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: 6c0c97be8c517de5da2a28fc47c801718e2e4b372fc102eba6b5ead5dfc2bf3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8077ccac2725c5ba41fecc5c957bd5f74716f842d9cc83a9e01c03e7cede4e9e",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-07-02T09:14:46Z",
    "title_canon_sha256": "f750c0af1802e8d5f924c64e0b0a64311fec044a102dd281a40ea105f8856495"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00550",
    "kind": "arxiv",
    "version": 2
  }
}