Pith Number

pith:RACVYH7I

pith:2009:RACVYH7IR6DALEBQR3JT4D4TG5

not attested not anchored not stored refs pending

Integral approach to sensitive singular perturbations

Evariste Sanchez-Palencia (LMM), Nicolas Meunier (MAP5)

arxiv:0910.2087 v1 · 2009-10-12 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RACVYH7IR6DALEBQR3JT4D4TG5}

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	2026-05-18T00:56:58.583669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88055c1fe88f860590308ed33e0f93374f496787852a1cb79e3f847228582c9e

Aliases

arxiv: 0910.2087 · arxiv_version: 0910.2087v1 · doi: 10.48550/arxiv.0910.2087 · pith_short_12: RACVYH7IR6DA · pith_short_16: RACVYH7IR6DALEBQ · pith_short_8: RACVYH7I

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/RACVYH7IR6DALEBQR3JT4D4TG5 \
  | 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: 88055c1fe88f860590308ed33e0f93374f496787852a1cb79e3f847228582c9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2540196e38644212e0ce1e5a509ebaa4e9c7f5fd7e40599a0283d914dbe3a74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2009-10-12T05:43:11Z",
    "title_canon_sha256": "cf99d6496052a5192cc5202d318a1ebc050ef62080a4f43b74bac17ced703467"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2087",
    "kind": "arxiv",
    "version": 1
  }
}