Pith Number

pith:2FFQU4RG

pith:2009:2FFQU4RGP2BHVSBRP7G6Q5N5DI

not attested not anchored not stored refs pending

On the class SI of J-contractive functions intertwining solutions of linear differential equations

A. Melnikov, D. Alpay, V. Vinnikov

arxiv:0912.2014 v3 · 2009-12-10 · math.FA · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2FFQU4RGP2BHVSBRP7G6Q5N5DI}

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	2026-05-18T03:38:56.484421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d14b0a72267e827ac8317fcde875bd1a0a68d51b0b719af32d468e948aed6f9f

Aliases

arxiv: 0912.2014 · arxiv_version: 0912.2014v3 · doi: 10.48550/arxiv.0912.2014 · pith_short_12: 2FFQU4RGP2BH · pith_short_16: 2FFQU4RGP2BHVSBR · pith_short_8: 2FFQU4RG

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/2FFQU4RGP2BHVSBRP7G6Q5N5DI \
  | 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: d14b0a72267e827ac8317fcde875bd1a0a68d51b0b719af32d468e948aed6f9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3861e6858d4de2468cd0569dd4e2fee64e9babe088933cfc080befae07f7558",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2009-12-10T15:02:58Z",
    "title_canon_sha256": "ea37c7e323d27a2bc9bd7e7d796d43cbcaccccf473134478452dfd009ae47387"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2014",
    "kind": "arxiv",
    "version": 3
  }
}