Pith Number

pith:NZFW757L

pith:2013:NZFW757L5SPKWRMRB5QQ4CYAZN

not attested not anchored not stored refs pending

Rigidity at infinity of trees and Euclidean buildings

Koen Struyve

arxiv:1311.1609 v3 · 2013-11-07 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NZFW757L5SPKWRMRB5QQ4CYAZN}

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	2026-05-18T02:32:31.674896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e4b6ff7ebec9eab45910f610e0b00cb681dce053a2d64ec9f93449be65e18bc

Aliases

arxiv: 1311.1609 · arxiv_version: 1311.1609v3 · doi: 10.48550/arxiv.1311.1609 · pith_short_12: NZFW757L5SPK · pith_short_16: NZFW757L5SPKWRMR · pith_short_8: NZFW757L

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/NZFW757L5SPKWRMRB5QQ4CYAZN \
  | 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: 6e4b6ff7ebec9eab45910f610e0b00cb681dce053a2d64ec9f93449be65e18bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1ace3916a0442b05db152ac220a99809a2fedabf69c337fbcd3accb5155566a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2013-11-07T08:57:04Z",
    "title_canon_sha256": "d66813d092668e7ba2e2ccefa3c5da1d2d99d84540bc3ff99d5eee538f2e285b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1609",
    "kind": "arxiv",
    "version": 3
  }
}