Pith Number

pith:DU6WTRPB

pith:2015:DU6WTRPBDGTSKQ7XTW7TEKHMP2

not attested not anchored not stored refs pending

Large Random Simplicial Complexes, II; the fundamental groups

A. Costa, M. Farber

arxiv:1509.04837 v2 · 2015-09-16 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DU6WTRPBDGTSKQ7XTW7TEKHMP2}

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	2026-05-18T01:26:57.266941Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d3d69c5e119a72543f79dbf3228ec7e88cdf8589dd26ada91a9ef7938706d2d

Aliases

arxiv: 1509.04837 · arxiv_version: 1509.04837v2 · doi: 10.48550/arxiv.1509.04837 · pith_short_12: DU6WTRPBDGTS · pith_short_16: DU6WTRPBDGTSKQ7X · pith_short_8: DU6WTRPB

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/DU6WTRPBDGTSKQ7XTW7TEKHMP2 \
  | 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: 1d3d69c5e119a72543f79dbf3228ec7e88cdf8589dd26ada91a9ef7938706d2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96e4e49f6e918778ef983e409210fcd272389bfd965feac1fbb79dbde65a5c84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-09-16T07:26:12Z",
    "title_canon_sha256": "4ecf34c24f4aafeac988532cf615739d70609451532ce5547c1fb48ebeebef6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.04837",
    "kind": "arxiv",
    "version": 2
  }
}