Pith Number

pith:7AM6M32H

pith:2012:7AM6M32H5DCNRWP7Q7HTRZJ5TC

not attested not anchored not stored refs pending

On the knot Floer filtration of the concordance group

Jennifer Hom, Michael Newman, Stephen Hancock

arxiv:1210.4193 v2 · 2012-10-15 · 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{7AM6M32H5DCNRWP7Q7HTRZJ5TC}

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	2026-05-18T03:00:01.153971Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f819e66f47e8c4d8d9ff87cf38e53d98a883e731c3e4dcc62655f8ac1e5b4f81

Aliases

arxiv: 1210.4193 · arxiv_version: 1210.4193v2 · doi: 10.48550/arxiv.1210.4193 · pith_short_12: 7AM6M32H5DCN · pith_short_16: 7AM6M32H5DCNRWP7 · pith_short_8: 7AM6M32H

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/7AM6M32H5DCNRWP7Q7HTRZJ5TC \
  | 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: f819e66f47e8c4d8d9ff87cf38e53d98a883e731c3e4dcc62655f8ac1e5b4f81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e4ad7d9f2b08a87989a1b43327021dc8310847b32bf4d7c0a9d26bd19515dd1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2012-10-15T20:58:53Z",
    "title_canon_sha256": "af14eab12bfacc933947c9b7ee9ce5aa71e039ce37dfa19ca35be172d3774825"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.4193",
    "kind": "arxiv",
    "version": 2
  }
}