Pith Number

pith:PC7BBFG3

pith:2016:PC7BBFG3ISCPPW5RBRYVSM5SKI

not attested not anchored not stored refs pending

Invertibility and Largest Eigenvalue of Symmetric Matrix Signings

Alexandra Kolla, Charles Carlson, Hsien-Chih Chang, Karthekeyan Chandrasekaran

arxiv:1611.03624 v2 · 2016-11-11 · cs.DM · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PC7BBFG3ISCPPW5RBRYVSM5SKI}

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	2026-05-18T00:39:47.212004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78be1094db4484f7dbb10c715933b25213083ff7c26133eb939fb64b989560ee

Aliases

arxiv: 1611.03624 · arxiv_version: 1611.03624v2 · doi: 10.48550/arxiv.1611.03624 · pith_short_12: PC7BBFG3ISCP · pith_short_16: PC7BBFG3ISCPPW5R · pith_short_8: PC7BBFG3

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/PC7BBFG3ISCPPW5RBRYVSM5SKI \
  | 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: 78be1094db4484f7dbb10c715933b25213083ff7c26133eb939fb64b989560ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57ec866286b516ed74714632a9f91ff9dfd4b548e7cd5fd1597fc1eb5c0e8317",
    "cross_cats_sorted": [
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2016-11-11T09:06:56Z",
    "title_canon_sha256": "38cd3e2af09cc9a5df2b5f78451eb0336af99a9e1c8f0371e26550db555c2b45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.03624",
    "kind": "arxiv",
    "version": 2
  }
}