Pith Number

pith:7QAKAVR3

pith:2023:7QAKAVR3AR3KI577AT4ADROAAY

not attested not anchored not stored refs pending

Generating the homology of covers of surfaces

Andrew Putman, Marco Boggi, Nick Salter

arxiv:2305.13109 v2 · 2023-05-22 · 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{7QAKAVR3AR3KI577AT4ADROAAY}

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	2026-07-05T07:39:27.869102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc00a0563b0476a477ff04f801c5c0063294e7ec6160c3b3581203e377ce951c

Aliases

arxiv: 2305.13109 · arxiv_version: 2305.13109v2 · doi: 10.48550/arxiv.2305.13109 · pith_short_12: 7QAKAVR3AR3K · pith_short_16: 7QAKAVR3AR3KI577 · pith_short_8: 7QAKAVR3

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/7QAKAVR3AR3KI577AT4ADROAAY \
  | 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: fc00a0563b0476a477ff04f801c5c0063294e7ec6160c3b3581203e377ce951c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b65a8613e813c2387041d3e14400b70903d611fca41c0cdd2c26f08fbfa4dec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2023-05-22T15:11:05Z",
    "title_canon_sha256": "026ac71a531f02b1c84f12438b00a98bfa21761a9410a485984c416f19e7284c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2305.13109",
    "kind": "arxiv",
    "version": 2
  }
}