Pith Number

pith:SEUVWCUF

pith:2016:SEUVWCUFZNXKFHUE7RNX6KXOYI

not attested not anchored not stored refs pending

3-regular colored graphs and classification of surfaces

Biplab Basak

arxiv:1602.07400 v2 · 2016-02-24 · 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{SEUVWCUFZNXKFHUE7RNX6KXOYI}

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	2026-05-18T00:39:13.675248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91295b0a85cb6ea29e84fc5b7f2aeec20627845d44915784502a0c2e97de0fa9

Aliases

arxiv: 1602.07400 · arxiv_version: 1602.07400v2 · doi: 10.48550/arxiv.1602.07400 · pith_short_12: SEUVWCUFZNXK · pith_short_16: SEUVWCUFZNXKFHUE · pith_short_8: SEUVWCUF

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/SEUVWCUFZNXKFHUE7RNX6KXOYI \
  | 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: 91295b0a85cb6ea29e84fc5b7f2aeec20627845d44915784502a0c2e97de0fa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "865f76f5fd786f8ef7f31dde0c862688b5f0ae3995843057d32761ee9a556991",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-02-24T05:07:49Z",
    "title_canon_sha256": "06da7dd7f30ae17f09b0bad314e23639f3fe64d84e9a7a18686567850d554f97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.07400",
    "kind": "arxiv",
    "version": 2
  }
}