Pith Number

pith:UPXDYZZQ

pith:2008:UPXDYZZQH5JWA3YJ6F5SU6GL6A

not attested not anchored not stored refs pending

Parabolic systems with coupled boundary conditions

Delio Mugnolo, Stefano Cardanobile

arxiv:0812.3813 v2 · 2008-12-19 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPXDYZZQH5JWA3YJ6F5SU6GL6A}

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	2026-05-17T23:57:54.602722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3ee3c67303f53606f09f17b2a78cbf0392f47b1564aecc2b7e304b307256829

Aliases

arxiv: 0812.3813 · arxiv_version: 0812.3813v2 · doi: 10.48550/arxiv.0812.3813 · pith_short_12: UPXDYZZQH5JW · pith_short_16: UPXDYZZQH5JWA3YJ · pith_short_8: UPXDYZZQ

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/UPXDYZZQH5JWA3YJ6F5SU6GL6A \
  | 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: a3ee3c67303f53606f09f17b2a78cbf0392f47b1564aecc2b7e304b307256829

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a635dfa7913667705cbe4ac724baa1be5e3d6ddcd81854229735e68087d9a171",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2008-12-19T15:29:51Z",
    "title_canon_sha256": "ad3cf45e14ab8b3b833abd583260c60d17900282fedfae992f007d473a6ef69b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.3813",
    "kind": "arxiv",
    "version": 2
  }
}