Pith Number

pith:AFX27Z42

pith:1997:AFX27Z42P5I35UFSW2CX64BJIV

not attested not anchored not stored refs pending

Validation and Calibration of Models for Reaction-Diffusion Systems

Joaquim Sainhas, Rui Dilao

arxiv:patt-sol/9712007 v1 · 1997-12-23 · patt-sol · nlin.PS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AFX27Z42P5I35UFSW2CX64BJIV}

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	2026-05-18T01:38:11.735163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

016fafe79a7f51bed0b2b6857f7029456d1c2d2c24a690cbf7ac203ee7a96ced

Aliases

arxiv: patt-sol/9712007 · arxiv_version: patt-sol/9712007v1 · doi: 10.48550/arxiv.patt-sol/9712007 · pith_short_12: AFX27Z42P5I3 · pith_short_16: AFX27Z42P5I35UFS · pith_short_8: AFX27Z42

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/AFX27Z42P5I35UFSW2CX64BJIV \
  | 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: 016fafe79a7f51bed0b2b6857f7029456d1c2d2c24a690cbf7ac203ee7a96ced

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee50ef92b0d0d3181b7d93f4acf622a9e25efb982e134b095918be6c97cc6b20",
    "cross_cats_sorted": [
      "nlin.PS"
    ],
    "license": "",
    "primary_cat": "patt-sol",
    "submitted_at": "1997-12-23T11:42:55Z",
    "title_canon_sha256": "ff3d3c953a87044835985eea1924c6f931779c0d5b5796d7e78cc2dfff9484b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "patt-sol/9712007",
    "kind": "arxiv",
    "version": 1
  }
}