Pith Number

pith:QQIIAMY2

pith:2017:QQIIAMY2LWX7SBOODWPMVFHELQ

not attested not anchored not stored refs pending

A criticality result for polycycles in a family of quadratic reversible centers

David Rojas, Jordi Villadelprat

arxiv:1705.05408 v1 · 2017-05-15 · 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{QQIIAMY2LWX7SBOODWPMVFHELQ}

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	2026-05-18T00:44:22.794094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

841080331a5daff905ce1d9eca94e45c17d758efd3f3779a2cad8a2a6a351cf6

Aliases

arxiv: 1705.05408 · arxiv_version: 1705.05408v1 · doi: 10.48550/arxiv.1705.05408 · pith_short_12: QQIIAMY2LWX7 · pith_short_16: QQIIAMY2LWX7SBOO · pith_short_8: QQIIAMY2

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/QQIIAMY2LWX7SBOODWPMVFHELQ \
  | 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: 841080331a5daff905ce1d9eca94e45c17d758efd3f3779a2cad8a2a6a351cf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9883ea191281620c0f7c6b8f4684f6b2886c5a73a37c54c7bcb5c740b88ea0b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2017-05-15T18:44:20Z",
    "title_canon_sha256": "8e61d7b05b75a27f909f479876b2623dc304c0e4f4b99bbe640cab2f8a667d90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.05408",
    "kind": "arxiv",
    "version": 1
  }
}