Pith Number

pith:J57IKJIU

pith:2013:J57IKJIUAKTXSBGFFH53CDK4JS

not attested not anchored not stored refs pending

Compression of unitary rank--structured matrices to CMV-like shape with an application to polynomial rootfinding

Gianna M. Del Corso, Luca Gemignani, Roberto Bevilacqua

arxiv:1307.2186 v1 · 2013-07-08 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J57IKJIUAKTXSBGFFH53CDK4JS}

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	2026-05-18T01:10:33.793959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f7e85251402a77904c529fbb10d5c4cafdb1a1734af40bbe44fac54b7777ca3

Aliases

arxiv: 1307.2186 · arxiv_version: 1307.2186v1 · doi: 10.48550/arxiv.1307.2186 · pith_short_12: J57IKJIUAKTX · pith_short_16: J57IKJIUAKTXSBGF · pith_short_8: J57IKJIU

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/J57IKJIUAKTXSBGFFH53CDK4JS \
  | 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: 4f7e85251402a77904c529fbb10d5c4cafdb1a1734af40bbe44fac54b7777ca3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d914aa69fc5a468e61357830aac8f575a09d642ec6443e231560e26cccadcea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-07-08T17:42:51Z",
    "title_canon_sha256": "37c667a9cb27097635ee523102131b922e7140606eafe06b1d2325a8780add37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2186",
    "kind": "arxiv",
    "version": 1
  }
}