Pith Number

pith:IQYC4KSV

pith:2018:IQYC4KSVU66VRWUVGQJ2XUWYNQ

not attested not anchored not stored refs pending

Positivity of iterated sequences of polynomials

Bao-Xuan Zhu

arxiv:1807.01062 v1 · 2018-07-03 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IQYC4KSVU66VRWUVGQJ2XUWYNQ}

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	2026-05-18T00:11:45.506712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44302e2a55a7bd58da953413abd2d86c3f7d54a227402bc1a904bf57d56815ed

Aliases

arxiv: 1807.01062 · arxiv_version: 1807.01062v1 · doi: 10.48550/arxiv.1807.01062 · pith_short_12: IQYC4KSVU66V · pith_short_16: IQYC4KSVU66VRWUV · pith_short_8: IQYC4KSV

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/IQYC4KSVU66VRWUVGQJ2XUWYNQ \
  | 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: 44302e2a55a7bd58da953413abd2d86c3f7d54a227402bc1a904bf57d56815ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61ef7134ad0a0a85e744fc274eea425366e2353d3df5aa95f3b6cdc18262cd0c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-07-03T10:03:29Z",
    "title_canon_sha256": "d61336e3bbecef675939179c84371f4ef52d1d9f8c95a032c3c121b52c742718"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01062",
    "kind": "arxiv",
    "version": 1
  }
}