Pith Number

pith:6L2PTM3B

pith:2017:6L2PTM3BEDF6YGS5MGCPP6HOT7

not attested not anchored not stored refs pending

Measure theory and classifying spaces

Ivan Marin

arxiv:1702.01889 v1 · 2017-02-07 · math.AT · math.GN · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6L2PTM3BEDF6YGS5MGCPP6HOT7}

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	2026-05-18T00:51:10.987308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2f4f9b36120cbec1a5d6184f7f8ee9ffc8c5a6ef82e557ad3d7ba4f6f76de9b

Aliases

arxiv: 1702.01889 · arxiv_version: 1702.01889v1 · doi: 10.48550/arxiv.1702.01889 · pith_short_12: 6L2PTM3BEDF6 · pith_short_16: 6L2PTM3BEDF6YGS5 · pith_short_8: 6L2PTM3B

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/6L2PTM3BEDF6YGS5MGCPP6HOT7 \
  | 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: f2f4f9b36120cbec1a5d6184f7f8ee9ffc8c5a6ef82e557ad3d7ba4f6f76de9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95b862e32a2307d5b156a6f8948a55ce88d8f9220821b7438a30473152b929ad",
    "cross_cats_sorted": [
      "math.GN",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-02-07T06:14:40Z",
    "title_canon_sha256": "a6ff3d232f3532fdbb3723d8273d00f8c7905b2d86ea7d6709b9f37964052d1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.01889",
    "kind": "arxiv",
    "version": 1
  }
}