Pith Number

pith:5A6FDLLU

pith:2019:5A6FDLLULWE2XUOWRBJOJQZRZC

not attested not anchored not stored refs pending

Some non-abelian covers of knots with non-trivial Alexander polynomial

Timothy Morris

arxiv:1902.06616 v1 · 2019-02-18 · 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{5A6FDLLULWE2XUOWRBJOJQZRZC}

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	2026-05-17T23:53:44.966733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e83c51ad745d89abd1d68852e4c331c89bf230c3c8c636dce07cb254c5343464

Aliases

arxiv: 1902.06616 · arxiv_version: 1902.06616v1 · doi: 10.48550/arxiv.1902.06616 · pith_short_12: 5A6FDLLULWE2 · pith_short_16: 5A6FDLLULWE2XUOW · pith_short_8: 5A6FDLLU

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/5A6FDLLULWE2XUOWRBJOJQZRZC \
  | 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: e83c51ad745d89abd1d68852e4c331c89bf230c3c8c636dce07cb254c5343464

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3336677a37dacecb2b727b1e696438f1772c8bc7369adaf2cb284e4d77bbfdf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-02-18T15:37:30Z",
    "title_canon_sha256": "a55209a0a74883a01731b4d670b8bd2819e55af8fb44bb4ae5100ccd64a43c68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06616",
    "kind": "arxiv",
    "version": 1
  }
}