Pith Number

pith:HTSQXC3Q

pith:2019:HTSQXC3QSPOBSN5576XAMUE2QX

not attested not anchored not stored refs pending

A Primer on Persistent Homology of Finite Metric Spaces

Facundo Memoli, Kritika Singhal

arxiv:1905.13400 v1 · 2019-05-31 · math.AT · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HTSQXC3QSPOBSN5576XAMUE2QX}

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	2026-05-17T23:44:35.012395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ce50b8b7093dc1937bdffae06509a85f7e8c287f792faa167d06e9f0c875bd7

Aliases

arxiv: 1905.13400 · arxiv_version: 1905.13400v1 · doi: 10.48550/arxiv.1905.13400 · pith_short_12: HTSQXC3QSPOB · pith_short_16: HTSQXC3QSPOBSN55 · pith_short_8: HTSQXC3Q

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/HTSQXC3QSPOBSN5576XAMUE2QX \
  | 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: 3ce50b8b7093dc1937bdffae06509a85f7e8c287f792faa167d06e9f0c875bd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8b569c6676a8db4e5652d2a49db0e4c9339406bf20f53a2b05939a4c38b64bc",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-05-31T03:39:45Z",
    "title_canon_sha256": "7d04b761715b2fd7dc974e7e0cd686e9e8f852bdf42585050f2816de8b82c858"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.13400",
    "kind": "arxiv",
    "version": 1
  }
}