Pith Number

pith:UHEAN6WF

pith:2015:UHEAN6WFD3V7BOPZIVROVVKMKT

not attested not anchored not stored refs pending

Real root finding for rank defects in linear Hankel matrices

Didier Henrion (LAAS), LIP6), Mohab Safey El Din (Syst\`emes Polynomiaux, Simone Naldi (LAAS)

arxiv:1502.02473 v1 · 2015-02-09 · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UHEAN6WFD3V7BOPZIVROVVKMKT}

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	2026-05-18T02:27:42.197142Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1c806fac51eebf0b9f94562ead54c54cfa846c2ed96447ec234f4ab9414aca3

Aliases

arxiv: 1502.02473 · arxiv_version: 1502.02473v1 · doi: 10.48550/arxiv.1502.02473 · pith_short_12: UHEAN6WFD3V7 · pith_short_16: UHEAN6WFD3V7BOPZ · pith_short_8: UHEAN6WF

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/UHEAN6WFD3V7BOPZIVROVVKMKT \
  | 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: a1c806fac51eebf0b9f94562ead54c54cfa846c2ed96447ec234f4ab9414aca3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2339531b8b967ed71441ceb1b0054d7931321fea4f26bb461a467373d2cbf38c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2015-02-09T13:12:40Z",
    "title_canon_sha256": "efe284e9881d572127c9d87dc7e3b1a83623d92546fc6d1d4e24df2832e9847a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02473",
    "kind": "arxiv",
    "version": 1
  }
}