Pith Number

pith:HYVAPFBA

pith:2022:HYVAPFBAVEYNFMUCIG75N7GPGY

not attested not anchored not stored refs pending

Disoriented homology and double branched covers

Brendan Owens, Sa\v{s}o Strle

arxiv:2207.09358 v2 · 2022-07-19 · 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{HYVAPFBAVEYNFMUCIG75N7GPGY}

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	2026-07-05T05:11:23.903250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e2a079420a930d2b28241bfd6fccf361718e1dc7f75a09597aab62cd23c04e9

Aliases

arxiv: 2207.09358 · arxiv_version: 2207.09358v2 · doi: 10.48550/arxiv.2207.09358 · pith_short_12: HYVAPFBAVEYN · pith_short_16: HYVAPFBAVEYNFMUC · pith_short_8: HYVAPFBA

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/HYVAPFBAVEYNFMUCIG75N7GPGY \
  | 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: 3e2a079420a930d2b28241bfd6fccf361718e1dc7f75a09597aab62cd23c04e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2fee0fadbf7545c67eed88873188defe7e9a377c07ff962256829b37e67b095",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2022-07-19T16:02:58Z",
    "title_canon_sha256": "77d06e945157e7035cb4a87e5805ea82c245812e5906038f02b0b2c2c9625f62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.09358",
    "kind": "arxiv",
    "version": 2
  }
}