Pith Number

pith:FDAJQNZL

pith:2018:FDAJQNZLIBIK56WH2AKVAIZUXP

not attested not anchored not stored refs pending

Magnitude meets persistence. Homology theories for filtered simplicial sets

Nina Otter

arxiv:1807.01540 v3 · 2018-07-04 · 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{FDAJQNZLIBIK56WH2AKVAIZUXP}

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

Filtered order complexes and magnitude homology of finite graded posets

Receipt and verification

First computed	2026-06-30T01:17:17.473934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28c098372b4050aefac7d015502334bbf5e78a2bbcbcfbeff982e51402d76097

Aliases

arxiv: 1807.01540 · arxiv_version: 1807.01540v3 · doi: 10.48550/arxiv.1807.01540 · pith_short_12: FDAJQNZLIBIK · pith_short_16: FDAJQNZLIBIK56WH · pith_short_8: FDAJQNZL

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/FDAJQNZLIBIK56WH2AKVAIZUXP \
  | 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: 28c098372b4050aefac7d015502334bbf5e78a2bbcbcfbeff982e51402d76097

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8e73330808366f77f35df7b120561d3cb1a3ccc1ef76106bae63aa9bee77136",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-07-04T12:26:33Z",
    "title_canon_sha256": "81b013e535230afe685e4022bcd5995f6edb661b03eb528b8ae3313464fd53c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01540",
    "kind": "arxiv",
    "version": 3
  }
}