Pith Number

pith:2GDDNS7I

pith:2017:2GDDNS7IX3XKMIY2F3CGGF4E2G

not attested not anchored not stored refs pending

Viscous displacement in porous media: the Muskat problem in 2D

Bogdan-Vasile Matioc

arxiv:1701.00992 v2 · 2017-01-04 · 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{2GDDNS7IX3XKMIY2F3CGGF4E2G}

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	2026-05-18T00:30:28.559410Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d18636cbe8beeea6231a2ec4631784d18e6e4d50c278337250c529cb74482976

Aliases

arxiv: 1701.00992 · arxiv_version: 1701.00992v2 · doi: 10.48550/arxiv.1701.00992 · pith_short_12: 2GDDNS7IX3XK · pith_short_16: 2GDDNS7IX3XKMIY2 · pith_short_8: 2GDDNS7I

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/2GDDNS7IX3XKMIY2F3CGGF4E2G \
  | 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: d18636cbe8beeea6231a2ec4631784d18e6e4d50c278337250c529cb74482976

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "205a99675d394c03b244dfa85db2388b791ccc8fc9feda6a1ffbb069d70f188a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-01-04T13:11:40Z",
    "title_canon_sha256": "ff24754468be2c765ae277a1f44344b2e7ca4b6f4fc432a61edd08ab7599fd4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.00992",
    "kind": "arxiv",
    "version": 2
  }
}