Pith Number

pith:6NW2C42C

pith:2018:6NW2C42CUCZ7OG34DOLDFNROTW

not attested not anchored not stored refs pending

When Left and Right Turns Inside Out: A Geometric and Categorical Introduction to an Inverse Problem in Persistence

Justin Curry

arxiv:1811.12392 v3 · 2018-11-29 · 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{6NW2C42CUCZ7OG34DOLDFNROTW}

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	2026-05-17T23:52:45.357782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f36da17342a0b3f71b7c1b9632b62e9d9d1432df4b47325d136e3a7554b3d5af

Aliases

arxiv: 1811.12392 · arxiv_version: 1811.12392v3 · doi: 10.48550/arxiv.1811.12392 · pith_short_12: 6NW2C42CUCZ7 · pith_short_16: 6NW2C42CUCZ7OG34 · pith_short_8: 6NW2C42C

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/6NW2C42CUCZ7OG34DOLDFNROTW \
  | 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: f36da17342a0b3f71b7c1b9632b62e9d9d1432df4b47325d136e3a7554b3d5af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b271a69fccc43bda12dc4743481e54110d8f8e9304e794b65889c8bbbda9ba6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-11-29T18:55:45Z",
    "title_canon_sha256": "a84feabb25e1cf509f36626a097ef3fb4252a3a7caed8500ea8e12fa0f6a8aa2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.12392",
    "kind": "arxiv",
    "version": 3
  }
}