Pith Number

pith:6BTW5XOJ

pith:2014:6BTW5XOJ6JZO72CD3AMFBWIARM

not attested not anchored not stored refs pending

Region unknotting number of $2$-bridge knots

Prabhakar Madeti, Vikash Siwach

arxiv:1407.2688 v1 · 2014-07-10 · 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{6BTW5XOJ6JZO72CD3AMFBWIARM}

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	2026-05-18T02:47:53.921358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0676eddc9f272efe843d81850d9008b1ca92332793a6456ed369963a22bf4f0

Aliases

arxiv: 1407.2688 · arxiv_version: 1407.2688v1 · doi: 10.48550/arxiv.1407.2688 · pith_short_12: 6BTW5XOJ6JZO · pith_short_16: 6BTW5XOJ6JZO72CD · pith_short_8: 6BTW5XOJ

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/6BTW5XOJ6JZO72CD3AMFBWIARM \
  | 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: f0676eddc9f272efe843d81850d9008b1ca92332793a6456ed369963a22bf4f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74249d6fa11c70d984cf3e0c74aa79634edb83663cffc69190c25fd600d3e434",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2014-07-10T04:34:14Z",
    "title_canon_sha256": "aa626f1d97b27c8dc0ea497fb840c06d74a29174db6acfd27045c91c0b8be3f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2688",
    "kind": "arxiv",
    "version": 1
  }
}