Pith Number

pith:N63ENJJ3

pith:2013:N63ENJJ3FQQFJIMK7TZWDND5EV

not attested not anchored not stored refs pending

On the fundamental group of certain polyhedral products

Mentor Stafa

arxiv:1310.3504 v3 · 2013-10-13 · 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{N63ENJJ3FQQFJIMK7TZWDND5EV}

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	2026-05-18T02:26:45.621808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fb646a53b2c2054a18afcf361b47d2552e3096dbd130045755c5681c83e399e

Aliases

arxiv: 1310.3504 · arxiv_version: 1310.3504v3 · doi: 10.48550/arxiv.1310.3504 · pith_short_12: N63ENJJ3FQQF · pith_short_16: N63ENJJ3FQQFJIMK · pith_short_8: N63ENJJ3

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/N63ENJJ3FQQFJIMK7TZWDND5EV \
  | 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: 6fb646a53b2c2054a18afcf361b47d2552e3096dbd130045755c5681c83e399e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "235c0d588e2ac918b794f4e6eb2a5a64625c135406229538430b9016b530fb73",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-10-13T19:05:47Z",
    "title_canon_sha256": "56a6f2dc30263d85c03befe725e2c3623e8bb162edf8512a0737b25e9d871b4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.3504",
    "kind": "arxiv",
    "version": 3
  }
}