Pith Number

pith:JMKRXM2B

pith:2009:JMKRXM2BIO75IIHDQQDT6VPVDX

not attested not anchored not stored refs pending

An exact Riemann solver based solution for regular shock refraction

B. van der Holst, P. Delmont, R. Keppens

arxiv:0904.2709 v1 · 2009-04-17 · physics.flu-dyn · physics.plasm-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{JMKRXM2BIO75IIHDQQDT6VPVDX}

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	2026-05-18T02:13:59.478898Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b151bb34143bfd420e384073f55f51dd1021267b52a78d77e2ce12a79eff79a

Aliases

arxiv: 0904.2709 · arxiv_version: 0904.2709v1 · doi: 10.48550/arxiv.0904.2709 · pith_short_12: JMKRXM2BIO75 · pith_short_16: JMKRXM2BIO75IIHD · pith_short_8: JMKRXM2B

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/JMKRXM2BIO75IIHDQQDT6VPVDX \
  | 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: 4b151bb34143bfd420e384073f55f51dd1021267b52a78d77e2ce12a79eff79a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0a92e77e22b6d9e9ebe2f78f84ecb46e61018048ba4d80b5e71115ea28e9877",
    "cross_cats_sorted": [
      "physics.plasm-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2009-04-17T14:26:37Z",
    "title_canon_sha256": "677ffeaa16394957a35559ad4bfc4f2deb8f4799e336b343b21de58327354adb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2709",
    "kind": "arxiv",
    "version": 1
  }
}