Pith Number

pith:JBQMEW2R

pith:2018:JBQMEW2RHZFN7TIYMFMAK7KXNY

not attested not anchored not stored refs pending

Nonlocal time porous medium equation with fractional time derivative

Iv\'an Area, Jean-Daniel Djida, Juan J. Nieto

arxiv:1803.03413 v1 · 2018-03-09 · 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{JBQMEW2RHZFN7TIYMFMAK7KXNY}

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	2026-05-18T00:21:39.687272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4860c25b513e4adfcd186158057d576e11b8309b9e3c574a1cc1c72f0543537d

Aliases

arxiv: 1803.03413 · arxiv_version: 1803.03413v1 · doi: 10.48550/arxiv.1803.03413 · pith_short_12: JBQMEW2RHZFN · pith_short_16: JBQMEW2RHZFN7TIY · pith_short_8: JBQMEW2R

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/JBQMEW2RHZFN7TIYMFMAK7KXNY \
  | 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: 4860c25b513e4adfcd186158057d576e11b8309b9e3c574a1cc1c72f0543537d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b36a5ecfce90b745943534159bd47919e9182becb891f09bda8a3ad7502dc9c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-03-09T08:36:41Z",
    "title_canon_sha256": "c35df1642983e2aab792a52917ccf2b737b7ce2ba22cf0f6fee1b7915df28e2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.03413",
    "kind": "arxiv",
    "version": 1
  }
}