Pith Number

pith:KPQHKFBU

pith:2012:KPQHKFBUZML3I7JUX2AX6FPCB5

not attested not anchored not stored refs pending

Multi-Adaptive Time-Integration

Anders Logg

arxiv:1205.2805 v1 · 2012-05-12 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KPQHKFBUZML3I7JUX2AX6FPCB5}

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	2026-05-18T03:55:45.947951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53e0751434cb17b47d34be817f15e20f781c7e83d7a601c6e4babd29d4c94b22

Aliases

arxiv: 1205.2805 · arxiv_version: 1205.2805v1 · doi: 10.48550/arxiv.1205.2805 · pith_short_12: KPQHKFBUZML3 · pith_short_16: KPQHKFBUZML3I7JU · pith_short_8: KPQHKFBU

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/KPQHKFBUZML3I7JUX2AX6FPCB5 \
  | 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: 53e0751434cb17b47d34be817f15e20f781c7e83d7a601c6e4babd29d4c94b22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8d7a3d04d9dce99d7fb5649919c2f03187b08e72fffbc9db2ff552552e3b64e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-05-12T18:30:42Z",
    "title_canon_sha256": "1c31b4396c34cc15620e7f4e322c3f6a1368ebafe35179b2bbd1f5cac9e4a756"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.2805",
    "kind": "arxiv",
    "version": 1
  }
}