Pith Number

pith:H775TUAB

pith:2012:H775TUAB3PN3U2WNWCVJEQYZAN

not attested not anchored not stored refs pending

A Note on the Space Complexity of Fast D-Finite Function Evaluation

Marc Mezzarobba (Inria Grenoble Rh\^one-Alpes / LIP Laboratoire de l'Informatique du Parall\'elisme)

arxiv:1209.5097 v1 · 2012-09-23 · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H775TUAB3PN3U2WNWCVJEQYZAN}

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	2026-05-18T03:44:59.275256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fffd9d001dbdbba6acdb0aa9243190341230566c4aae1e0daa86307d304705a

Aliases

arxiv: 1209.5097 · arxiv_version: 1209.5097v1 · doi: 10.48550/arxiv.1209.5097 · pith_short_12: H775TUAB3PN3 · pith_short_16: H775TUAB3PN3U2WN · pith_short_8: H775TUAB

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/H775TUAB3PN3U2WNWCVJEQYZAN \
  | 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: 3fffd9d001dbdbba6acdb0aa9243190341230566c4aae1e0daa86307d304705a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01594539fc90db7923ddda390daf1270892a42093bb753764b96696723015453",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2012-09-23T19:02:26Z",
    "title_canon_sha256": "e7e5eb2456793cf94aca9cdf5aef6d19ac86064281a391d73fde3ae37886acd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5097",
    "kind": "arxiv",
    "version": 1
  }
}