Pith Number

pith:HS6AEFIT

pith:2009:HS6AEFIT7HKNOSTRI4L5IM2RMY

not attested not anchored not stored refs pending

Exact solution of the hydrodynamical Riemann problem with nonzero tangential velocities and the ultrarelativistic equation of state

Malgorzata Pietka, Patryk Mach

arxiv:0905.0349 v2 · 2009-05-04 · math-ph · gr-qc · 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{HS6AEFIT7HKNOSTRI4L5IM2RMY}

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	2026-05-18T02:34:59.418350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cbc021513f9d4d74a714717d43351663ccad229756ccbf0c8d504b23a9831a2

Aliases

arxiv: 0905.0349 · arxiv_version: 0905.0349v2 · doi: 10.48550/arxiv.0905.0349 · pith_short_12: HS6AEFIT7HKN · pith_short_16: HS6AEFIT7HKNOSTR · pith_short_8: HS6AEFIT

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/HS6AEFIT7HKNOSTRI4L5IM2RMY \
  | 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: 3cbc021513f9d4d74a714717d43351663ccad229756ccbf0c8d504b23a9831a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1ea1970839560065f26aed200e96f50f767577f7d0159cd8dd3280d86bd1e30",
    "cross_cats_sorted": [
      "gr-qc",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2009-05-04T10:54:43Z",
    "title_canon_sha256": "97b2598ad97c2b88139c533ed4a2bec7cb44e97ea1a9cd3fbfa74958940d9a9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0349",
    "kind": "arxiv",
    "version": 2
  }
}