Pith Number

pith:QIXR32UM

pith:2018:QIXR32UMDDL6KUG4Z3E4LUK4VR

not attested not anchored not stored refs pending

Periodic oscillators, isochronous centers and resonance

David Rojas, Rafael Ortega

arxiv:1804.03127 v2 · 2018-04-09 · 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{QIXR32UMDDL6KUG4Z3E4LUK4VR}

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	2026-05-17T23:53:31.296280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

822f1dea8c18d7e550dccec9c5d15cac670e43ae1f2516456b01ff01bba29871

Aliases

arxiv: 1804.03127 · arxiv_version: 1804.03127v2 · doi: 10.48550/arxiv.1804.03127 · pith_short_12: QIXR32UMDDL6 · pith_short_16: QIXR32UMDDL6KUG4 · pith_short_8: QIXR32UM

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/QIXR32UMDDL6KUG4Z3E4LUK4VR \
  | 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: 822f1dea8c18d7e550dccec9c5d15cac670e43ae1f2516456b01ff01bba29871

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a655349097b228fbc35ffba03684a78c0287e782faa54d424440e90ffcc38d03",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-04-09T17:48:30Z",
    "title_canon_sha256": "3935061eb4f174be31229de1e760463747ec0cacbf375cb5a714b119c9fb8c35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03127",
    "kind": "arxiv",
    "version": 2
  }
}