Pith Number

pith:7EIL6NFM

pith:2014:7EIL6NFMUPRYMJBLNOG6W6EXPE

not attested not anchored not stored refs pending

Cords and 1-handles attached to surface-knots

Seiichi Kamada

arxiv:1403.0690 v1 · 2014-03-04 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7EIL6NFMUPRYMJBLNOG6W6EXPE}

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	2026-05-18T01:23:45.492186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f910bf34aca3e386242b6b8deb7897791b61f33f07497600c8f0f92dec26f24a

Aliases

arxiv: 1403.0690 · arxiv_version: 1403.0690v1 · doi: 10.48550/arxiv.1403.0690 · pith_short_12: 7EIL6NFMUPRY · pith_short_16: 7EIL6NFMUPRYMJBL · pith_short_8: 7EIL6NFM

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/7EIL6NFMUPRYMJBLNOG6W6EXPE \
  | 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: f910bf34aca3e386242b6b8deb7897791b61f33f07497600c8f0f92dec26f24a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bed7f4f8527a9b800a0b7eeb17e36dbd83b42ec97c4154ae40193ca01df02571",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2014-03-04T05:34:27Z",
    "title_canon_sha256": "084e9483b7c86b0f8303dc52ac93a3db18fde61e7fd84a5a32672ed818d2867d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.0690",
    "kind": "arxiv",
    "version": 1
  }
}