Pith Number

pith:QYZBEHAF

pith:2013:QYZBEHAFKA7AYUN2EMTQWKKDF7

not attested not anchored not stored refs pending

Finite difference method for a general fractional porous medium equation

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

arxiv:1307.2474 v1 · 2013-07-09 · math.NA · 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{QYZBEHAFKA7AYUN2EMTQWKKDF7}

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	2026-05-18T03:18:52.412422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8632121c05503e0c51ba23270b29432fd5f8188a386255f3b5ca9f0a202682e3

Aliases

arxiv: 1307.2474 · arxiv_version: 1307.2474v1 · doi: 10.48550/arxiv.1307.2474 · pith_short_12: QYZBEHAFKA7A · pith_short_16: QYZBEHAFKA7AYUN2 · pith_short_8: QYZBEHAF

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/QYZBEHAFKA7AYUN2EMTQWKKDF7 \
  | 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: 8632121c05503e0c51ba23270b29432fd5f8188a386255f3b5ca9f0a202682e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1aad4708c2443db0eb32697f707b3e86e4ab40c081efa353ab21d0afcf1e1418",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-07-09T14:33:31Z",
    "title_canon_sha256": "4d2cf1f5f07286b22fddfba5ab2ee1c8819c2324b3b66885cf968a80398dbf3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2474",
    "kind": "arxiv",
    "version": 1
  }
}