Pith Number

pith:Y2FRJLMP

pith:2019:Y2FRJLMP6H57KMYWFPVVL7IS46

not attested not anchored not stored refs pending

Ephemeral persistence modules and distance comparison

Francois Petit, Nicolas Berkouk

arxiv:1902.09933 v3 · 2019-02-26 · math.AT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y2FRJLMP6H57KMYWFPVVL7IS46}

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.

Cited by

1 paper in Pith

Functors on Posets Left Kan Extend to Cosheaves: an Erratum

Receipt and verification

First computed	2026-07-05T02:21:32.543975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c68b14ad8ff1fbf533162beb55fd12e78063ad3d81c6dbb9715b6512673abfa6

Aliases

arxiv: 1902.09933 · arxiv_version: 1902.09933v3 · doi: 10.48550/arxiv.1902.09933 · pith_short_12: Y2FRJLMP6H57 · pith_short_16: Y2FRJLMP6H57KMYW · pith_short_8: Y2FRJLMP

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/Y2FRJLMP6H57KMYWFPVVL7IS46 \
  | 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: c68b14ad8ff1fbf533162beb55fd12e78063ad3d81c6dbb9715b6512673abfa6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dba6db5f254e614e1ebdee687339aaeb4eded6058381ff994c370f9151c339a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-02-26T13:51:04Z",
    "title_canon_sha256": "6d0e36156d84d3e9f27083b6629b2b2caf7a891d947784cd2b396852ba9fee04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09933",
    "kind": "arxiv",
    "version": 3
  }
}