Pith Number

pith:M7IW5JTK

pith:2011:M7IW5JTKVWOYORGPUTFKRYZ5SB

not attested not anchored not stored refs pending

Riemann solver for a kinematic wave traffic model with discontinuous flux

Jeffrey K. Wiens, JF Williams, John M. Stockie

arxiv:1112.5649 v2 · 2011-12-23 · 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{M7IW5JTKVWOYORGPUTFKRYZ5SB}

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	2026-05-18T03:25:35.264424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67d16ea66aad9d8744cfa4caa8e33d9045e2c9b6626ab723373a3d0c9fbcf4f6

Aliases

arxiv: 1112.5649 · arxiv_version: 1112.5649v2 · doi: 10.48550/arxiv.1112.5649 · pith_short_12: M7IW5JTKVWOY · pith_short_16: M7IW5JTKVWOYORGP · pith_short_8: M7IW5JTK

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/M7IW5JTKVWOYORGPUTFKRYZ5SB \
  | 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: 67d16ea66aad9d8744cfa4caa8e33d9045e2c9b6626ab723373a3d0c9fbcf4f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da3cb2caba5d498d7fbc5f8ccfa15509bffdd847fb7605e6236c368fd48881d2",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-12-23T20:08:28Z",
    "title_canon_sha256": "02825dbb0832000584b7bcfd56d784f7d5a83574a6577ba8ba6b4cec68b91a42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.5649",
    "kind": "arxiv",
    "version": 2
  }
}