Pith Number

pith:KVSAAUDH

pith:2019:KVSAAUDHJTNVB7KTTB2Y2OAQU6

not attested not anchored not stored refs pending

Sylvester equations and polynomial separation of spectra

Olavi Nevanlinna

arxiv:1904.07549 v1 · 2019-04-16 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KVSAAUDHJTNVB7KTTB2Y2OAQU6}

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	2026-05-17T23:48:24.888955Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55640050674cdb50fd5398758d3810a782ff70ea117a162231ea9f9cb7be5f99

Aliases

arxiv: 1904.07549 · arxiv_version: 1904.07549v1 · doi: 10.48550/arxiv.1904.07549 · pith_short_12: KVSAAUDHJTNV · pith_short_16: KVSAAUDHJTNVB7KT · pith_short_8: KVSAAUDH

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/KVSAAUDHJTNVB7KTTB2Y2OAQU6 \
  | 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: 55640050674cdb50fd5398758d3810a782ff70ea117a162231ea9f9cb7be5f99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecd753972694bcd345d2b27b7359e229ea83317f0df7137c53f9cb33f42c66b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2019-04-16T09:26:56Z",
    "title_canon_sha256": "e71dc358bcf4a6906d03f4e1477684325f82cd064dce3facd32c456dc77b9c08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07549",
    "kind": "arxiv",
    "version": 1
  }
}