Pith Number

pith:DPUSRHPA

pith:2018:DPUSRHPA4WASZWVCIV4PPM6OYQ

not attested not anchored not stored refs pending

On the thin film Muskat and the thin film Stokes equations

Gabriele Bruell, Rafael Granero-Belinch\'on

arxiv:1802.05509 v2 · 2018-02-15 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DPUSRHPA4WASZWVCIV4PPM6OYQ}

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	2026-05-17T23:42:30.840990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1be9289de0e5812cdaa24578f7b3cec43dee1a88d3feba01f08dfbea1b08bd53

Aliases

arxiv: 1802.05509 · arxiv_version: 1802.05509v2 · doi: 10.48550/arxiv.1802.05509 · pith_short_12: DPUSRHPA4WAS · pith_short_16: DPUSRHPA4WASZWVC · pith_short_8: DPUSRHPA

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/DPUSRHPA4WASZWVCIV4PPM6OYQ \
  | 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: 1be9289de0e5812cdaa24578f7b3cec43dee1a88d3feba01f08dfbea1b08bd53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bef9b16ccae3b28301811cab9f4d570a678d61020657b7923d3be21b1c7ad54e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-02-15T12:41:53Z",
    "title_canon_sha256": "855906c8b101f7a8b2aaa7f7d81ba6955491cfdc2e6894fa4df3c7813255aaed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.05509",
    "kind": "arxiv",
    "version": 2
  }
}