Pith Number

pith:4B6P3PHP

pith:2018:4B6P3PHP33M6IFTNXZURRRVAAJ

not attested not anchored not stored refs pending

Porous medium equation with nonlocal pressure

Diana Stan, F\'elix del Teso, Juan Luis V\'azquez

arxiv:1801.04244 v1 · 2018-01-12 · 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{4B6P3PHP33M6IFTNXZURRRVAAJ}

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	2026-05-18T00:26:09.397069Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e07cfdbcefded9e4166dbe6918c6a00266ab30b951e4bed9899d01a5e73deab4

Aliases

arxiv: 1801.04244 · arxiv_version: 1801.04244v1 · doi: 10.48550/arxiv.1801.04244 · pith_short_12: 4B6P3PHP33M6 · pith_short_16: 4B6P3PHP33M6IFTN · pith_short_8: 4B6P3PHP

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/4B6P3PHP33M6IFTNXZURRRVAAJ \
  | 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: e07cfdbcefded9e4166dbe6918c6a00266ab30b951e4bed9899d01a5e73deab4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9633342ce5ebdfe1e3918b6b68e5cc88c461f3a03f7eeb2c008aa8a9767c2f75",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-01-12T17:32:15Z",
    "title_canon_sha256": "9ab698d71f41af178f93d4318ba61f5c8e58832c4f072055abf199e037cf0d92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04244",
    "kind": "arxiv",
    "version": 1
  }
}