Pith Number

pith:7QWR2D74

pith:2011:7QWR2D74B4ZXVZ5M7E5RWGXHUU

not attested not anchored not stored refs pending

Laplacian Growth II: Saffman - Taylor Problem Without Surface Tension in Filtration Combustion: Formation of One Finger with Half of the Channel Width

Oleg Kupervasser

arxiv:1106.0832 v11 · 2011-06-04 · nlin.CD · nlin.PS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7QWR2D74B4ZXVZ5M7E5RWGXHUU}

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	2026-05-18T01:13:31.435077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc2d1d0ffc0f337ae7acf93b1b1ae7a5163298e4d2b1e30193d8b29c0d9a125a

Aliases

arxiv: 1106.0832 · arxiv_version: 1106.0832v11 · doi: 10.48550/arxiv.1106.0832 · pith_short_12: 7QWR2D74B4ZX · pith_short_16: 7QWR2D74B4ZXVZ5M · pith_short_8: 7QWR2D74

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/7QWR2D74B4ZXVZ5M7E5RWGXHUU \
  | 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: fc2d1d0ffc0f337ae7acf93b1b1ae7a5163298e4d2b1e30193d8b29c0d9a125a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abbcfdd25f094f5c742c56e7e5fc0fcc6fa6290fbba5fd2a44e2b0a60614763b",
    "cross_cats_sorted": [
      "nlin.PS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2011-06-04T15:34:20Z",
    "title_canon_sha256": "0aacad0cd5e11b80fdde8b324145f1681c3d7cdbd72268b4d70edfdce227fe34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.0832",
    "kind": "arxiv",
    "version": 11
  }
}