Pith Number

pith:CO47TQL3

pith:2019:CO47TQL35OI7ZU6L2LNCO77TDX

not attested not anchored not stored refs pending

New aspects of Descartes' rule of signs

Boris Zalmanovich Shapiro, Vladimir Petrov Kostov

arxiv:1901.06793 v1 · 2019-01-21 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CO47TQL35OI7ZU6L2LNCO77TDX}

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	2026-05-17T23:55:49.143761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13b9f9c17beb91fcd3cbd2da277ff31dfa70f7eb8cac8f027ae6caf9760175fe

Aliases

arxiv: 1901.06793 · arxiv_version: 1901.06793v1 · doi: 10.48550/arxiv.1901.06793 · pith_short_12: CO47TQL35OI7 · pith_short_16: CO47TQL35OI7ZU6L · pith_short_8: CO47TQL3

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/CO47TQL35OI7ZU6L2LNCO77TDX \
  | 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: 13b9f9c17beb91fcd3cbd2da277ff31dfa70f7eb8cac8f027ae6caf9760175fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "429efbbe34a4aa06a68b2810f63f98cd63742e34fef94cc259df7c57816a91d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2019-01-21T05:41:34Z",
    "title_canon_sha256": "7ae1f533ca1df8b200af6695ed8abfe9d85b0a90833ef7c5465b76570a537fdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.06793",
    "kind": "arxiv",
    "version": 1
  }
}