Pith Number

pith:BPRT7EL7

pith:2012:BPRT7EL7L4H7G22U7LUO22GQG3

not attested not anchored not stored refs pending

Periodic perturbations with delay of separated variables differential equations

Luca Bisconti, Marco Spadini

arxiv:1201.4796 v2 · 2012-01-23 · math.CA · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BPRT7EL7L4H7G22U7LUO22GQG3}

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	2026-05-18T04:02:26.797782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0be33f917f5f0ff36b54fae8ed68d036e121b93ac77e2fae3b14d76e9d183473

Aliases

arxiv: 1201.4796 · arxiv_version: 1201.4796v2 · doi: 10.48550/arxiv.1201.4796 · pith_short_12: BPRT7EL7L4H7 · pith_short_16: BPRT7EL7L4H7G22U · pith_short_8: BPRT7EL7

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/BPRT7EL7L4H7G22U7LUO22GQG3 \
  | 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: 0be33f917f5f0ff36b54fae8ed68d036e121b93ac77e2fae3b14d76e9d183473

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8caa8c8caefda611c92847fc38ee19655d3f4c9b8ca9362310fd164a0e98ecd1",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2012-01-23T18:19:27Z",
    "title_canon_sha256": "50de7ce6de24a03553062c46228e555eecdf57ead8a195c3ebc46c2366ac0bd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4796",
    "kind": "arxiv",
    "version": 2
  }
}