Pith Number

pith:3UFTW7K6

pith:2016:3UFTW7K6W3GHLPRADZLTSQXB3Q

not attested not anchored not stored refs pending

Restricting cohomology classes to disk and segment configuration spaces

Hannah Alpert

arxiv:1608.06612 v1 · 2016-08-23 · math.MG · math.AT · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UFTW7K6W3GHLPRADZLTSQXB3Q}

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	2026-05-18T01:08:13.648893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd0b3b7d5eb6cc75be201e573942e1dc2f9d22fd4780361ec90ce1dcbc14f250

Aliases

arxiv: 1608.06612 · arxiv_version: 1608.06612v1 · doi: 10.48550/arxiv.1608.06612 · pith_short_12: 3UFTW7K6W3GH · pith_short_16: 3UFTW7K6W3GHLPRA · pith_short_8: 3UFTW7K6

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/3UFTW7K6W3GHLPRADZLTSQXB3Q \
  | 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: dd0b3b7d5eb6cc75be201e573942e1dc2f9d22fd4780361ec90ce1dcbc14f250

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5049b8669307e926067e83f5f2cef0f20fcc2d810f636279aebc2f7f7c9882a",
    "cross_cats_sorted": [
      "math.AT",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2016-08-23T19:31:11Z",
    "title_canon_sha256": "ab768421f6a3850ae0f5ff8ae26e599c61ea1cb0df5a8cd57513b5104daded49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.06612",
    "kind": "arxiv",
    "version": 1
  }
}