Pith Number

pith:CN7XME4Z

pith:2017:CN7XME4Z535YVDPSAQMOJRQA2Y

not attested not anchored not stored refs pending

Exclusion sets for eigenvalues of matrices

Chaoqian Li, Suhua Li, Yaotang Li

arxiv:1705.01758 v2 · 2017-05-04 · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CN7XME4Z535YVDPSAQMOJRQA2Y}

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	2026-05-18T00:43:50.019650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

137f761399eefb8a8df20418e4c600d60233c8df8e1785634b312012de6b5b29

Aliases

arxiv: 1705.01758 · arxiv_version: 1705.01758v2 · doi: 10.48550/arxiv.1705.01758 · pith_short_12: CN7XME4Z535Y · pith_short_16: CN7XME4Z535YVDPS · pith_short_8: CN7XME4Z

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/CN7XME4Z535YVDPSAQMOJRQA2Y \
  | 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: 137f761399eefb8a8df20418e4c600d60233c8df8e1785634b312012de6b5b29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25b19f4dec7a04ceb27e55938041e365bc55ede6fba61d7c0a07d53675af9968",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2017-05-04T09:22:25Z",
    "title_canon_sha256": "ee07e06fa926991b6cbc6ea296761429e4884bc967557902447b704275af140e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.01758",
    "kind": "arxiv",
    "version": 2
  }
}