Pith Number

pith:GLFUDZ5D

pith:2007:GLFUDZ5DJYLPBCQ4MHF6XSTXFT

not attested not anchored not stored refs pending

On partial polynomial interpolation

Giorgio Ottaviani, Maria Chiara Brambilla

arxiv:0705.4448 v3 · 2007-05-30 · math.AG · 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{GLFUDZ5DJYLPBCQ4MHF6XSTXFT}

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	2026-05-18T03:41:56.830996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32cb41e7a34e16f08a1c61cbebca772ce21cbb494efb3835320e62a3407f42ca

Aliases

arxiv: 0705.4448 · arxiv_version: 0705.4448v3 · doi: 10.48550/arxiv.0705.4448 · pith_short_12: GLFUDZ5DJYLP · pith_short_16: GLFUDZ5DJYLPBCQ4 · pith_short_8: GLFUDZ5D

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/GLFUDZ5DJYLPBCQ4MHF6XSTXFT \
  | 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: 32cb41e7a34e16f08a1c61cbebca772ce21cbb494efb3835320e62a3407f42ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22ad914cee6edc980683568343fc1418b9747bb4639bfff2acbc77e677923a82",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2007-05-30T18:28:00Z",
    "title_canon_sha256": "646bfce2dae0362d4e8648e125fac02a6cc4b4857bf3aa80aedccd8c9179d676"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.4448",
    "kind": "arxiv",
    "version": 3
  }
}